Manufacturing method and manufacturing device of electron paramagnetic resonance probe

Abstract

The invention discloses a manufacturing method and a manufacturing device of an electron paramagnetic resonance probe. The manufacturing method comprises the following steps: establishing a metal probe body model; acquiring an electric field distribution diagram and a magnetic field distribution diagram of the current metal probe body model in m different setting modes; determining whether electric field distribution diagrams and magnetic field distribution diagrams meeting a first set condition exist in the electric field distribution diagrams and the magnetic field distribution diagrams in the m different set modes or not; if yes, obtaining a first preset resonant frequency corresponding to the electric field distribution diagram and the magnetic field distribution diagram meeting a first set condition; and if not, adjusting at least one of the numerical value of m, the size of each side resonant cavity in the metal probe body model and the shape of each side resonant cavity to obtain a new metal probe body model. The resonant cavity for accommodating the sample in the manufactured electron paramagnetic resonance probe is good in magnetic field uniformity and large in magnetic field intensity, and the EPR detection effect of the sample can be improved.

Description

Technical Field

[0001] The invention relates to the technical field of electron paramagnetic resonance, and in particular to a method and a device for making an electron paramagnetic resonance probe. Background Art

[0002] An important unit in the electron paramagnetic resonance (EPR) spectrometer is the metal probe.

[0003] The metal probe includes a resonant cavity. The role of the resonant cavity in the entire EPR spectrometer test is to convert the microwave signal input by the microwave bridge transmitter into an oscillating magnetic field in the area where the sample to be tested is located to stimulate the electron spin transition of the sample to be tested, and convert the electromagnetic field signal carrying the EPR signal into a measurable microwave signal to be transmitted to the microwave bridge receiver.

[0004] The specific situation in the resonant cavity is as follows: after the microwave signal enters the resonant cavity, an alternating electric field and magnetic field will be generated in the cavity space. The sample to be tested will absorb microwave energy due to dielectric loss in the alternating electric field. On the one hand, this will reduce the Q value of the resonant cavity, and on the other hand, it will cause the sample to be tested to heat up. These are unfavorable factors, so special attention should be paid during design. In addition, only alternating magnetic fields can cause paramagnetic resonance, so when designing the resonant cavity, the requirement for the sample area is that the magnetic field should be as strong as possible. Summary of the invention

[0005] The present invention provides a method and device for manufacturing an electron paramagnetic resonance probe, which can make the magnetic field uniformity of the resonance cavity containing the sample in the manufactured electron paramagnetic resonance probe good and the magnetic field intensity high, thereby improving the EPR detection effect of the sample.

[0006] According to one aspect of the present invention, a method for manufacturing an electron paramagnetic resonance probe is provided, the method comprising:

[0007] A metal probe body model is established, wherein the metal probe body model includes an arc resonant cavity, at least n identical side resonant cavities, and a gap connecting the arc resonant cavity and the side resonant cavity; n is an even number; and the boundary of the side resonant cavity includes a first arc;

[0008] Obtaining electric field distribution diagrams and magnetic field distribution diagrams of the current metal probe body model in m different setting modes, where m is greater than 1 and m is an integer;

[0009] Determine whether the electric field distribution diagrams and the magnetic field distribution diagrams in the m different setting modes include the electric field distribution diagram and the magnetic field distribution diagram that meet the first setting condition;

[0010] If yes, obtaining a first preset resonant frequency corresponding to the electric field distribution diagram and the magnetic field distribution diagram that meet the first setting condition;

[0011] determining whether a difference between the first preset resonant frequency and the desired resonant frequency satisfies a second set condition;

[0012] If so, the metal probe body model corresponding to the first preset resonant frequency is determined as the required metal probe body model, and the actual metal probe body is manufactured according to the required metal probe body model.

[0013] Optionally, when it is determined that none of the electric field distribution diagrams and the magnetic field distribution diagrams under the m different setting modes meets the first setting condition, adjust the value of m, the size of each edge resonant cavity in the metal probe body model, and at least one of the shapes of each edge resonant cavity to obtain a new metal probe body model, and return to the step of obtaining the electric field distribution diagram and the magnetic field distribution diagram of the current metal probe body model under m different setting modes;

[0014] When it is determined that the difference between the first preset resonant frequency and the required resonant frequency does not meet the second set condition, adjust at least one of the size of the gap in the metal probe body model and the thickness of the metal probe body model, determine the first preset resonant frequency corresponding to the adjusted metal probe body model, and return to the step of determining whether the difference between the first preset resonant frequency and the required resonant frequency meets the second set condition.

[0015] Optionally, the first setting condition is that under the same setting mode, in the magnetic field distribution diagram of the metal probe body model, the magnetic field is concentrated in the arc resonant cavity, the magnetic field intensity in the arc resonant cavity is much stronger than the magnetic field intensity in each edge resonant cavity, and the magnetic field direction in the arc resonant cavity is the set direction, and in the electric field distribution diagram of the metal probe body model, the electric field energy in the arc resonant cavity is less than the set electric field energy.

[0016] Optionally, the adjusting of at least one of the value of m, the size of each of the side resonant cavities in the metal probe body model, and the shape of each of the side resonant cavities to obtain a new metal probe body model specifically includes:

[0017] Determining whether a boundary of the edge resonant cavity includes a parabola;

[0018] If not, the radius of the circle where the boundary of each side resonant cavity is located is increased at the same time to obtain a new metal probe body model;

[0019] If yes, the step of adjusting the arc length of the second arc and the width of the line connecting the first coordinate point and the second coordinate point in the parabola to obtain a new metal probe body model is performed;

[0020] Determine whether the radius of the circle where the boundary of the edge resonant cavity is located is greater than a set radius value;

[0021] If yes, the shapes of the boundaries of the side resonant cavities are adjusted simultaneously, so that the boundaries of the side resonant cavities include the second arc, the third arc and the first curve, and a new metal probe body model is obtained;

[0022] Determine whether the arc length of the second circular arc and the width of the line connecting the first coordinate point and the second coordinate point in the parabola meet a third setting condition, wherein the distance between the line connecting the first coordinate point and the second coordinate point and the vertex of the parabola is a fixed value;

[0023] If so, adjust the arc length of the second arc and the width of the line connecting the first coordinate point and the second coordinate point in the parabola to obtain a new metal probe body model, and return to the step of obtaining the electric field distribution diagram and magnetic field distribution diagram of the current metal probe body model under m different setting modes.

[0024] Optionally, the second arc and the third arc are spaced apart and located in the first circle; the center of the circle where the first circle is located is the same as the center of the circle where the boundary of the arc resonance cavity is located; the arc length of the second arc is equal to the arc length of the third arc; the first end of the second arc is connected to the first end of the first curve, and the first end of the third arc is connected to the second end of the first curve; the second arc and the third arc are located on the side of the first curve close to the arc resonance cavity; the first curve is a parabola.

[0025] Optionally, when it is determined that the radius of the circle where the boundary of the edge resonant cavity is located is not greater than the set radius value, return to the step of obtaining the electric field distribution diagram and the magnetic field distribution diagram of the current metal probe body model in m different setting modes;

[0026] When it is determined that the arc length of the second arc and the width of the line connecting the first coordinate point and the second coordinate point in the parabola do not meet the third setting condition, set m=hm, and return to the step of obtaining the electric field distribution diagram and magnetic field distribution diagram of the current metal probe body model in m different setting modes, where h is greater than 1 and h is an integer.

[0027] Optionally, the shapes of the boundaries of each of the side resonant cavities are adjusted simultaneously so that the boundaries of each of the side resonant cavities also include a fourth arc and a fifth arc; wherein the arc length of the fourth arc is equal to the arc length of the fifth arc; the first end of the second arc is connected to the first end of the fourth arc, the second end of the fourth arc is connected to the first end of the first curve, the first end of the third arc is connected to the first end of the fifth arc, and the second end of the fifth arc is connected to the second end of the first curve.

[0028] Optionally, adjusting at least one of the size of the gap in the metal probe body model and the thickness of the metal probe body model to determine the first preset resonant frequency corresponding to the adjusted metal probe body model specifically includes:

[0029] Adjusting the length of each of the gaps in the metal probe body model;

[0030] Determining whether the number of times the length of each of the gaps in the metal probe body model is adjusted is greater than a first set number;

[0031] If not, then obtaining the first preset resonant frequency corresponding to the adjusted metal probe body model, and returning to the step of determining whether the difference between the first preset resonant frequency and the required resonant frequency satisfies the second set condition;

[0032] If so, the thickness of the metal probe body model is adjusted multiple times so that the difference between the first preset resonant frequency corresponding to the adjusted metal probe body model and the required resonant frequency meets the second setting condition.

[0033] Optionally, the step of adjusting the thickness of the metal probe body model multiple times so that the difference between the first preset resonant frequency and the required resonant frequency corresponding to the metal probe body model after the thickness of the metal probe body model is adjusted satisfies the second setting condition further includes:

[0034] The length of each of the gaps in each of the metal probe body models is reduced while the thickness of the metal probe body model is reduced, so that the difference between the first preset resonant frequency corresponding to the adjusted metal probe body model and the required resonant frequency meets the second set condition.

[0035] Optionally, after determining the metal probe body model corresponding to the first preset resonant frequency as the required metal probe body model, the method further includes:

[0036] Establishing a feed plate model, and setting the surface of the feed plate model close to the required metal probe body model to be perpendicular to the perpendicular bisector of the circular resonant cavity in the required metal probe body model, to obtain an electron paramagnetic resonance probe model, wherein the feed plate model includes a dielectric plate model and a microstrip line model, and the microstrip line model is located in the dielectric plate model;

[0037] Moving the position of the microstrip line model in the dielectric plate model multiple times until the electric field distribution diagram and the magnetic field distribution diagram of the arc resonant cavity in the required metal probe body model meet the first set condition, and stopping moving the microstrip line model;

[0038] Adjusting the distance between the desired metal probe body model and the feeding plate model multiple times until the set magnetic field strength of the arc resonant cavity in the desired metal probe body model meets the third set condition, and stopping adjusting the distance between the desired metal probe body model and the feeding plate model;

[0039] Determining whether the set magnetic field strength is equal to the required magnetic field strength;

[0040] If yes, determining whether the difference between the second preset resonance frequency and the required resonance frequency of the electron paramagnetic resonance probe model satisfies a fourth setting condition;

[0041] If yes, the required electron paramagnetic resonance probe is manufactured according to the current electron paramagnetic resonance probe model.

[0042] Optionally, when it is determined that the set magnetic field strength is not equal to the required magnetic field strength, the step of moving the position of the microstrip line model in the dielectric plate model multiple times;

[0043] When it is determined that the difference between the second preset resonant frequency of the electron paramagnetic resonance probe model and the required resonant frequency does not satisfy the fourth setting condition, adjust at least one of the size of each side resonant cavity of the required metal probe body model in the electron paramagnetic resonance probe model, the shape of each side resonant cavity, the thickness of the required metal probe body model and the length of the gap, and return to the step of determining whether the difference between the second preset resonant frequency of the electron paramagnetic resonance probe model and the required resonant frequency satisfies the fourth setting condition.

[0044] Optionally, the second setting condition is c=(1±10%)b, where c is the first preset resonant frequency and b is the desired resonant frequency;

[0045] The fourth setting condition is d=(1±5‰)b, where d is the second preset resonant frequency.

[0046] Optionally, after manufacturing the required electron paramagnetic resonance probe according to the current electron paramagnetic resonance probe model, the method further includes:

[0047] A shielding cover is manufactured, and the shielding cover is made to surround a portion of the desired electron paramagnetic resonance probe and the dielectric plate; wherein the shielding cover comprises a second through hole and a third through hole; the second through hole is arranged opposite to the third through hole; the orthographic projection of the second through hole on the dielectric plate coincides with the orthographic projection of the third through hole on the dielectric plate; the orthographic projection of the second through hole on the dielectric plate covers the orthographic projection of the circular resonant cavity in the desired electron paramagnetic resonance probe on the dielectric plate.

[0048] According to another aspect of the present invention, there is provided a device for manufacturing an electron paramagnetic resonance probe, the manufacturing device comprising: a model building module, a field distribution map determination module, a first control module, a second control module and a manufacturing module;

[0049] The model building module is used to build a metal probe body model, wherein the metal probe body model includes an arc resonant cavity, at least n identical edge resonant cavities, and a gap connecting the arc resonant cavity and the edge resonant cavity; wherein n is an even number; and the boundary of the edge resonant cavity includes a first arc;

[0050] The field distribution diagram determination module is used to obtain the electric field distribution diagram and the magnetic field distribution diagram of the current metal probe body model in m different setting modes, where m is greater than 1 and m is an integer;

[0051] The first control module is used for obtaining a first preset resonant frequency corresponding to the electric field distribution diagram and the magnetic field distribution diagram that meet the first setting condition when it is determined that the electric field distribution diagram and the magnetic field distribution diagram in the m different setting modes meet the first setting condition;

[0052] The second control module is used to determine the metal probe body model corresponding to the first preset resonant frequency as the required metal probe body model when the difference between the first preset resonant frequency and the required resonant frequency meets a second set condition;

[0053] The manufacturing module is used to manufacture the actual metal probe body according to the required metal probe body model.

[0054] Optionally, the first control module is also used to adjust the value of m, the size of each of the edge resonant cavities in the metal probe body model, and at least one of the shapes of each of the edge resonant cavities when it is determined that the electric field distribution diagrams and the magnetic field distribution diagrams under the m different setting modes do not meet the first setting condition, to obtain a new metal probe body model, and control the field distribution diagram determination module to obtain the electric field distribution diagram and the magnetic field distribution diagram of the current metal probe body model under the m different setting modes;

[0055] The second control module is also used to adjust at least one of the size of the gap in the metal probe body model and the thickness of the metal probe body model when the difference between the first preset resonant frequency and the required resonant frequency does not meet the second set condition, determine the first preset resonant frequency corresponding to the adjusted metal probe body model, and continue to determine whether the difference between the first preset resonant frequency and the required resonant frequency meets the second set condition.

[0056] The embodiment of the present invention provides a method for manufacturing an electron paramagnetic resonance probe, which comprises: firstly establishing a metal probe body model, then obtaining an electric field distribution diagram and a magnetic field distribution diagram of the current metal probe model under m different setting modes, and then determining an electric field distribution diagram and a magnetic field distribution diagram that meet the first setting condition. If the electric field distribution diagram and the magnetic field distribution diagram that meet the first setting condition cannot be determined, then changing at least one of the value of m, the shape and the size of the edge resonant cavity in the metal probe body model, and returning to the step of obtaining the electric field distribution diagram and the magnetic field distribution diagram under m different setting modes of the current metal probe body model. If the electric field distribution diagram and the magnetic field distribution diagram that meet the first setting condition are determined, then continuing to obtain the first preset resonant frequency corresponding to the electric field distribution diagram and the magnetic field distribution diagram that meet the first setting condition, and then determining whether the first preset resonant frequency meets the second setting condition. If so, then manufacturing the actual metal probe body according to the metal probe body model corresponding to the first preset resonant frequency that meets the second setting condition, thereby completing the manufacturing of the electron paramagnetic resonance probe. If the first preset resonant frequency does not meet the second set condition, the size of the gap in the metal probe body model and / or the thickness of the metal probe body model are adjusted, and the first preset resonant frequency corresponding to the adjusted metal probe body model is obtained, and then the first preset resonant frequency is further determined to meet the second set condition. If the electric field distribution diagram and the magnetic field distribution diagram of the metal probe body model at the first preset resonant frequency meet the first set condition, and the difference between the first preset resonant frequency and the required resonant frequency meets the second set condition, then the magnetic field uniformity in the arc resonant cavity in the actual metal probe body manufactured according to the metal probe body model corresponding to the first preset resonant frequency is good, and the magnetic field strength is high. In summary, the method for manufacturing the electron paramagnetic resonance probe provided in this embodiment can make the magnetic field uniformity of the resonant cavity that accommodates the sample in the manufactured electron paramagnetic resonance probe good, and the magnetic field strength is high, which can improve the EPR detection effect of the sample.

[0057] It should be understood that the contents described in this section are not intended to identify the key or important features of the embodiments of the present invention, nor are they intended to limit the scope of the present invention. Other features of the present invention will become easily understood through the following description. BRIEF DESCRIPTION OF THE DRAWINGS

[0058] In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the following briefly introduces the drawings required for use in the description of the embodiments. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without creative work.

[0059] Figure 1 It is a schematic flow chart of a method for manufacturing an electron paramagnetic resonance probe provided in accordance with an embodiment of the present invention;

[0060] Figure 2 is a structural schematic diagram of a metal probe body model provided according to an embodiment of the present invention;

[0061] Figure 3 yes Figure 2 The magnetic field distribution diagram of the metal probe body model shown;

[0062] Figure 4 It is a schematic diagram of the simulation page when inputting the resonant frequency and setting the number of modes;

[0063] Figure 5 is a schematic diagram of data in different setting modes provided according to an embodiment of the present invention;

[0064] Figure 6 A magnetic field distribution diagram of a metal probe body model in a first setting mode is provided according to an embodiment of the present invention;

[0065] Figure 7 An electric field distribution diagram of a metal probe body model in a first setting mode is provided according to an embodiment of the present invention;

[0066] Figure 8 A magnetic field distribution diagram of a metal probe body model in a second setting mode is provided according to an embodiment of the present invention;

[0067] Fig. 9 An electric field distribution diagram of a metal probe body model in a second setting mode is provided according to an embodiment of the present invention;

[0068] Fig.10 A magnetic field distribution diagram of a metal probe body model in a third setting mode is provided according to an embodiment of the present invention;

[0069] Fig.11 An electric field distribution diagram of a metal probe body model in a third setting mode is provided according to an embodiment of the present invention;

[0070] Fig.12 is a schematic flow chart of another method for manufacturing an electron paramagnetic resonance probe provided according to an embodiment of the present invention;

[0071] Fig.13 is a structural schematic diagram of another metal probe body model provided according to an embodiment of the present invention;

[0072] Fig.14 is a structural schematic diagram of another metal probe body model provided according to an embodiment of the present invention;

[0073] Fig.15 is a structural schematic diagram of an electron paramagnetic resonance probe model provided according to an embodiment of the present invention;

[0074] Fig.16 is a curve diagram of return loss provided according to an embodiment of the present invention;

[0075] Fig.17 is a schematic diagram of multiple return loss curves provided according to an embodiment of the present invention;

[0076] Fig.18 is a schematic structural diagram of a required electron paramagnetic resonance probe provided in an embodiment of the present invention;

[0077] Fig.19 It is a structural schematic diagram of a device for manufacturing an electron paramagnetic resonance probe provided according to an embodiment of the present invention. DETAILED DESCRIPTION

[0078] In order to enable those skilled in the art to better understand the scheme of the present invention, the technical scheme in the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work should fall within the scope of protection of the present invention.

[0079] It should be noted that the terms "first", "second", etc. in the specification and claims of the present invention and the above-mentioned drawings are used to distinguish similar objects, and are not necessarily used to describe a specific order or sequence. It should be understood that the data used in this way can be interchanged where appropriate, so that the embodiments of the present invention described herein can be implemented in an order other than those illustrated or described herein. In addition, the terms "including" and "having" and any variations thereof are intended to cover non-exclusive inclusions, for example, a process, method, system, product or device that includes a series of steps or units is not necessarily limited to those steps or units that are clearly listed, but may include other steps or units that are not clearly listed or inherent to these processes, methods, products or devices.

[0080] Figure 1FIG. 1 is a flow chart of a method for manufacturing an electron paramagnetic resonance probe according to an embodiment of the present invention, with reference to FIG. Figure 1 The method for manufacturing the electron paramagnetic resonance probe provided in this embodiment includes the following steps:

[0081] S110. Establish a metal probe body model.

[0082] The metal probe body model includes an arc resonant cavity, at least n identical edge resonant cavities and a gap connecting the arc resonant cavity and the edge resonant cavity; wherein n is an even number; and the boundary of the edge resonant cavity includes a first arc.

[0083] Specifically, in this embodiment, the metal probe body model can be established by using HFSS simulation software, and eigenvalue simulation can be performed.

[0084] The steps to establish the metal probe body model are as follows:

[0085] S1101. Create a simulated metal block in the HFSS simulation software, wherein the length and width of the simulated metal block are equal to the length and width of the actual required product, and the height of the simulated metal block is less than the height of the actual required product. This is because in actual operation, the purpose of limiting the length, width and height is to make the size not larger than the limited size, but it can be smaller than this size. However, in order to maximize the effect, the length and width are used as the maximum size as possible, and the height size is appropriately reduced during simulation to facilitate later simulation adjustment.

[0086] S1102. Design loops and gaps on the long and wide surfaces.

[0087] A circular through hole in the sample area is designed at the center of the simulated metal block (the circular through hole in the sample area refers to the arc resonant cavity). The circular through hole in the sample area is used to install a sample tube, which can accommodate a sample. The diameter of the circular through hole in the sample area is adapted to the design parameters according to the diameter of the sample tube actually required to accommodate the sample.

[0088] n edge through holes (edge ​​through holes refer to edge resonant cavities) are designed around the circular through hole in the sample area for the passage of magnetic induction lines. The edge through holes are all circular in shape, and the distances from the centers of all edge through holes to the center of the circular through hole in the sample area are the same.

[0089] Each edge through hole is connected to the circular through hole in the sample area by a gap, thereby forming a metal probe body model. Figure 2 is a schematic diagram of the structure of a metal probe body model provided according to an embodiment of the present invention, with reference to Figure 2 The metal probe body model 110 includes an arc resonant cavity 113, two side resonant cavities 111, and a gap 112 connecting the arc resonant cavity 113 and the side resonant cavity 111.

[0090] In actual products, the metal medium around the circular through hole in the sample area and each edge through hole is used to act as a loop, the loop generates current, the gap acts as a capacitor, and the spacing width of the gap is no more than 1 / 2 of the radius of the circular through hole in the sample area. Figure 2 The metal probe body model 110 shown is composed of three loops and two gaps. The loops are connected by the gaps. The middle loop is the sample area, and the two edge loops serve as channels for the return of the microwave magnetic field flux. Since there are equal electromotive forces in the two gaps, there are equal magnetic fluxes in the three loops. Although the magnetic fluxes in the three loops are equal, the magnetic field energy stored in the middle loop where the sample is stored will be much stronger than that in the two edge loops. For specific magnetic field distribution, please refer to Figure 3 .

[0091] S120, obtaining electric field distribution diagrams and magnetic field distribution diagrams of the current metal probe body model in m different setting modes, where m is greater than 1 and is an integer.

[0092] Specifically, step S120 includes the following steps:

[0093] S1201. In an eigenmode simulation, determine a required resonant frequency b in an actual application environment, receive an input resonant frequency a and a set mode number m, wherein a≤b, m≥2. For example, b=9.6 GHz, a=9.6 GHz and m=3. Figure 4 This is a schematic diagram of the simulation page when inputting the resonant frequency and setting the number of modes. Figure 4 , the user can enter 9.5 GHz in the Minimum Frequency on the page, where 9.5 GHz represents a, and enter 3 in the Number of Modes on the page, where 3 represents m. When m=3, the m different setting modes include the first setting mode, the second setting mode, and the third setting mode.

[0094] S1202, after confirmation, output the data of 3 setting modes, Figure 5 is a schematic diagram of data under different setting modes provided according to an embodiment of the present invention, with reference to Figure 5 , the data in each setting mode includes the first resonant frequency and Q value, among which the first resonant frequency corresponding to the three setting modes is on the rise. Limited by the shape of the resonant cavity, the input resonant frequency and the design of the simulation software itself, the data of the three setting modes output are determined. If m=5 is input, then the first three data of the five setting mode data output are the same as the data of m=3 above, and the data of two setting modes will be added accordingly, among which the first resonant frequency is also on the rise.

[0095] S1203, obtaining electric field distribution diagrams and magnetic field distribution diagrams under m different setting modes.

[0096] Figure 6 A magnetic field distribution diagram of a metal probe body model in a first setting mode is provided according to an embodiment of the present invention. Figure 7 An electric field distribution diagram of a metal probe body model in a first setting mode is provided according to an embodiment of the present invention. Figure 8 A magnetic field distribution diagram of a metal probe body model in a second setting mode is provided according to an embodiment of the present invention. Fig. 9 An electric field distribution diagram of a metal probe body model in a second setting mode is provided according to an embodiment of the present invention. Fig.10 A magnetic field distribution diagram of a metal probe body model in a third setting mode is provided according to an embodiment of the present invention. Fig.11 According to an embodiment of the present invention, an electric field distribution diagram of a metal probe body model in a third setting mode is provided, and step S130 is executed after obtaining electric field distribution diagrams and magnetic field distribution diagrams in m different setting modes.

[0097] S130, determining whether there is an electric field distribution map and a magnetic field distribution map in the m different setting modes that meet the first setting condition.

[0098] The electric field strength of each electric field distribution diagram and the magnetic field strength and magnetic field direction of each magnetic field distribution diagram are analyzed, and it is determined whether each electric field distribution diagram and magnetic field distribution diagram meet the first setting condition. The first setting condition means that both the electric field distribution diagram and the magnetic field distribution diagram must meet the setting requirements under the same setting mode.

[0099] Optionally, the first setting condition is that in the same setting mode, in the magnetic field distribution diagram of the metal probe body model, the magnetic field is concentrated in the arc resonant cavity, the magnetic field intensity in the arc resonant cavity is much stronger than the magnetic field intensity in each side resonant cavity, and the magnetic field direction in the arc resonant cavity is the set direction, and in the electric field distribution diagram of the metal probe body model, the electric field energy in the arc resonant cavity is less than the set electric field energy. Figure 6-Figure 11 , it can be seen that the electric field distribution diagram and the magnetic field distribution diagram in the third setting mode meet the first setting condition.

[0100] If there is an electric field distribution diagram and a magnetic field distribution diagram that meet the first setting condition among the electric field distribution diagrams and the magnetic field distribution diagrams in the m different setting modes, step S140 is executed.

[0101] If the electric field distribution diagrams and the magnetic field distribution diagrams under the m different setting modes do not meet the first setting condition, step S150 is executed.

[0102] S140: Obtain a first preset resonant frequency corresponding to an electric field distribution diagram and a magnetic field distribution diagram that meet a first set condition.

[0103] Specifically, each setting mode has a corresponding first preset resonant frequency, for example, refer to Figure 5 , Figure 5 The resonant frequency corresponding to "Frequency (GHz)" in the third setting mode is the first preset resonant frequency. If the electric field distribution diagram and the magnetic field distribution diagram in the third setting mode meet the first setting condition, the resonant frequency in the third setting mode is the first preset resonant frequency required in step S140, that is, Figure 5 The resonant frequency corresponding to Mode3.

[0104] S150, adjusting at least one of the value of m, the size of each side resonant cavity in the metal probe body model, and the shape of each side resonant cavity to obtain a new metal probe body model. Then returning to step S120.

[0105] Specifically, the value of m can be increased. For example, m can be adjusted to 2m. When m=3, m=2m is adjusted and the process returns to step S120. When returning to step S120, the content executed in step S120 is to obtain the electric field distribution diagram and the magnetic field distribution diagram under 6 different setting modes.

[0106] A new metal probe body model can also be obtained by adjusting the size of each side resonant cavity. For example, the radius of the arc where the side resonant cavity is located can be increased. It should be noted that the size of each side resonant cavity is adjusted simultaneously, and the adjustment amplitude is also the same.

[0107] A new metal probe body model can also be obtained by adjusting the shape of each side resonance cavity. For example, the shape of each side resonance cavity is changed from an arc to a curve and an arc, and the curve can be a parabola. It should be noted that the shape of each side resonance cavity is adjusted at the same time, and the adjusted shapes are the same.

[0108] After adjusting the size and shape of each side resonant cavity in the metal probe body model, step S120 is executed, and the metal probe body model in S120 is the adjusted metal probe body model.

[0109] S160: Determine whether the difference between the first preset resonant frequency and the required resonant frequency satisfies a second set condition.

[0110] Specifically, the required resonant frequency is the resonant frequency b required in the actual application environment.

[0111] Optionally, the second setting condition is c=(1±10%)b, wherein c is the first preset resonant frequency and b is the desired resonant frequency.

[0112] If it is determined that the difference between the first preset resonant frequency and the required resonant frequency satisfies the second setting condition, step S170 is executed.

[0113] If it is determined that the difference between the first preset resonant frequency and the required resonant frequency does not satisfy the second setting condition, step S180 is executed.

[0114] S170: Determine the metal probe body model corresponding to the first preset resonant frequency as the required metal probe body model, and manufacture the actual metal probe body according to the required metal probe body model.

[0115] Specifically, if the electric field distribution diagram and magnetic field distribution diagram of the metal probe body model under the first preset resonant frequency meet the first setting condition, and the difference between the first preset resonant frequency and the required resonant frequency meets the second setting condition, then the magnetic field in the arc resonant cavity of the actual metal probe body made according to the metal probe body model corresponding to the first preset resonant frequency has good uniformity and high magnetic field intensity, which can improve the EPR detection effect of the sample.

[0116] S180, adjusting at least one of the size of the gap in the metal probe body model and the thickness of the metal probe body model, and determining a first preset resonant frequency corresponding to the adjusted metal probe body model. Then returning to step S160.

[0117] Specifically, the size of the gap and the thickness of the metal probe body model will affect the resonant frequency of the metal probe body model. Adjusting the size of the gap may specifically be adjusting the width and / or length of the gap, and adjusting the thickness of the metal probe body model may be increasing or decreasing.

[0118] The present embodiment provides a method for manufacturing an electron paramagnetic resonance probe, which includes: first establishing a metal probe body model, then obtaining an electric field distribution map and a magnetic field distribution map of the current metal probe model in m different setting modes, and then determining an electric field distribution map and a magnetic field distribution map that meet the first setting condition. If the electric field distribution map and the magnetic field distribution map that meet the first setting condition cannot be determined, then changing at least one of the value of m, the shape and the size of the edge resonant cavity in the metal probe body model, and returning to the step of obtaining the electric field distribution map and the magnetic field distribution map of the current metal probe body model in m different setting modes. If the electric field distribution map and the magnetic field distribution map that meet the first setting condition are determined, then continuing to obtain the first preset resonant frequency corresponding to the electric field distribution map and the magnetic field distribution map that meet the first setting condition, and then determining whether the first preset resonant frequency meets the second setting condition. If it meets the second setting condition, then manufacturing the actual metal probe body according to the metal probe body model corresponding to the first preset resonant frequency that meets the second setting condition, thereby completing the manufacturing of the electron paramagnetic resonance probe. If the first preset resonant frequency does not meet the second set condition, the size of the gap in the metal probe body model and / or the thickness of the metal probe body model are adjusted, and the first preset resonant frequency corresponding to the adjusted metal probe body model is obtained, and then the first preset resonant frequency is further determined to meet the second set condition. If the electric field distribution diagram and the magnetic field distribution diagram of the metal probe body model at the first preset resonant frequency meet the first set condition, and the difference between the first preset resonant frequency and the required resonant frequency meets the second set condition, then the magnetic field uniformity in the arc resonant cavity in the actual metal probe body manufactured according to the metal probe body model corresponding to the first preset resonant frequency is good, and the magnetic field strength is high. In summary, the method for manufacturing the electron paramagnetic resonance probe provided in this embodiment can make the magnetic field uniformity of the resonant cavity that accommodates the sample in the manufactured electron paramagnetic resonance probe good, and the magnetic field strength is high, which can improve the EPR detection effect of the sample.

[0119] Optional, Fig.12 FIG. 1 is a flow chart of another method for manufacturing an electron paramagnetic resonance probe according to an embodiment of the present invention, with reference to FIG. Fig.12 , the method for making an electron paramagnetic resonance probe comprises the following steps:

[0120] S210, establishing a metal probe body model.

[0121] Specifically, step S210 is identical to step S110. For the description of step S210, please refer to the description of step S110, which will not be repeated here.

[0122] S220, obtaining electric field distribution diagrams and magnetic field distribution diagrams of the current metal probe body model in m different setting modes, where m is greater than 1 and is an integer.

[0123] Specifically, step S220 is identical to step S120. For the description of step S220, please refer to the description of step S120, which will not be repeated here.

[0124] S230 , determining whether there is an electric field distribution diagram and a magnetic field distribution diagram that meet a first setting condition among the electric field distribution diagrams and the magnetic field distribution diagrams in m different setting modes.

[0125] If not, execute step S251, and if so, execute step S240.

[0126] S240: Obtain a first preset resonant frequency corresponding to an electric field distribution diagram and a magnetic field distribution diagram that meet a first setting condition.

[0127] Specifically, step S240 is identical to step S140. For the description of step S240, please refer to the description of step S140, which will not be repeated here.

[0128] S251. Determine whether the boundary of the side resonant cavity includes a parabola.

[0129] Specifically, in step S210, the boundary of the side resonant cavity in the initially established metal probe body model does not include a parabola.

[0130] If the boundary of the side resonant cavity does not include a parabola, step S252 is executed.

[0131] If the boundary of the side resonant cavity includes a parabola, step S256 is executed.

[0132] S252. At the same time, the radius of the circle where the boundary of each side resonance cavity is located is increased to obtain a new metal probe body model.

[0133] Specifically, the radii of the circles where the boundaries of the side resonant cavities are located are increased simultaneously, and the increase amplitudes are the same. When the side resonant cavities are adjusted, the boundaries of the side resonant cavities in the metal probe body model after the adjustment are the same.

[0134] S253, determining whether the radius of the circle where the boundary of the side resonant cavity is located is greater than the set radius value.

[0135] Specifically, the set radius value refers to the maximum radius value that the simulated metal block can accommodate, that is, the radius of the circle where the boundary of the edge resonant cavity is located reaches the limit.

[0136] If it is determined that the radius of the circle where the boundary of the side resonant cavity is located is not greater than the set radius value, the process returns to step S220.

[0137] If it is determined that the radius of the circle where the boundary of the side resonant cavity is located is greater than the set radius value, step S254 is executed.

[0138] S254. Simultaneously adjust the shape of the boundary of each side resonance cavity so that the boundary of each side resonance cavity includes the second arc, the third arc and the first curve, thereby obtaining a new metal probe body model.

[0139] in, Fig.13 is a schematic diagram of the structure of another metal probe body model provided according to an embodiment of the present invention, referring to Fig.13 , the second arc 10 and the third arc 11 are distributed at intervals and are located in the first circle; the center of the circle where the first circle is located is the same as the center of the circle where the boundary of the arc resonance cavity 113 is located; the arc length of the second arc 10 is equal to the arc length of the third arc 11; the first end of the second arc 10 is connected to the first end of the first curve 20, and the first end of the third arc 11 is connected to the second end of the first curve 20; the second arc 10 and the third arc 11 are located on the side of the first curve 20 close to the arc resonance cavity 113; the first curve 20 is a parabola.

[0140] Specifically, when the radius of the circle where the boundary of the side resonant cavity is located can no longer be increased, the shape of the boundary of the side resonant cavity begins to change, wherein the first end of the second arc, the first end of the third arc and the vertex of the parabola can all be points on the circle where the boundary of the side resonant cavity is located in step S252. With this setting, more metal media can be retained on the basis of step S252, thereby reducing the resonant frequency of the metal probe body model.

[0141] S255: Determine whether the arc length of the second arc and the width of the line connecting the first coordinate point and the second coordinate point in the parabola meet a third setting condition.

[0142] The distance between the line connecting the first coordinate point and the second coordinate point and the vertex of the parabola is a fixed value.

[0143] Specifically, step S255 is set to determine whether the boundary of the edge resonant cavity in step S254 reaches the edge of the simulated metal block or the process limit of making the edge resonant cavity. The first set coordinate value in the first coordinate point is the same as the first set coordinate value of the second coordinate point. The first set coordinate value can be a vertical coordinate value.

[0144] If it is determined that the arc length of the second arc and the width of the line connecting the first coordinate point and the second coordinate point in the parabola meet the third setting condition, it means that the boundary of the edge resonant cavity has not reached the edge of the simulated metal block and the process limit of making the edge resonant cavity, and step S256 is executed at this time.

[0145] S256, adjusting the arc length of the second arc and the width of the line connecting the first coordinate point and the second coordinate point in the parabola to obtain a new metal probe body model, and returning to step S220.

[0146] Specifically, adjusting the arc length of the second arc can specifically be to increase the arc length of the second arc. Since the arc length of the second arc is always the same as the arc length of the third arc, the arc length of the third arc is increased while increasing the arc length of the second arc, and the boundaries of the resonance cavities at each side are adjusted at the same time, and the boundaries of the resonance cavities at each side after adjustment are the same. Adjusting the width of the line connecting the first coordinate point and the second coordinate point in the parabola refers to adjusting the width of the parabola. When executing step S256, the adjustment can be made based on the circle of step S252, that is, to ensure that the first end of the second arc, the first end of the third arc and the vertex of the parabola are all points on the circle of step S252.

[0147] If it is determined that the arc length of the second arc and the width of the line connecting the first coordinate point and the second coordinate point in the parabola do not meet the third setting condition, it means that the boundary of the edge resonant cavity reaches the edge of the simulated metal block or the process limit of making the edge resonant cavity, and step S257 is executed at this time.

[0148] S257, set m=hm, where h is greater than 1 and is an integer, and return to step S220.

[0149] Specifically, h may be 2. The shape, size and m value of the boundary of each side resonant cavity are changed multiple times until a first preset resonant frequency corresponding to the electric field distribution diagram and the magnetic field distribution diagram that meets the first setting condition is determined.

[0150] S260: Determine whether the difference between the first preset resonant frequency and the required resonant frequency satisfies a second set condition.

[0151] Specifically, step S260 is identical to step S160. For the description of step S260, please refer to the description of step S160, which will not be repeated here.

[0152] S270: Determine the metal probe body model corresponding to the first preset resonant frequency as the required metal probe body model, and manufacture the actual metal probe body according to the required metal probe body model.

[0153] Specifically, step S270 is identical to step S170. For the description of step S270, please refer to the description of step S170, which will not be repeated here.

[0154] S280, adjusting at least one of the size of the gap in the metal probe body model and the thickness of the metal probe body model, and determining a first preset resonant frequency corresponding to the adjusted metal probe body model. Then returning to step S260.

[0155] Specifically, the content of step S280 is the same as that of step S180. For the description of step S280, please refer to the description of S180, which will not be repeated here.

[0156] Optional, Fig.14 is a schematic diagram of the structure of another metal probe body model provided according to an embodiment of the present invention, referring to Fig.14 , and at the same time adjust the shape of the boundary of each side resonant cavity so that the boundary of each side resonant cavity also includes the fourth arc 30 and the fifth arc 40; wherein, the arc length of the fourth arc 30 is equal to the arc length of the fifth arc 40; the first end of the second arc 10 is connected to the first end of the fourth arc 30, the second end of the fourth arc 30 is connected to the first end of the first curve 20, the first end of the third arc 11 is connected to the first end of the fifth arc 40, and the second end of the fifth arc 40 is connected to the second end of the first curve 20.

[0157] Specifically, in Fig.13 On the basis of the metal probe body model shown, the fourth arc 30 and the fifth arc 40 are added to make the corners of the edge resonant cavity smoother, thereby facilitating the processing and manufacturing of the edge resonant cavity and avoiding the problem of processing breakage that is easy to occur during the manufacturing process due to the direct connection of the first curve with the second arc and the third arc to form a sharp angle.

[0158] It should be noted that if the boundary of the side resonant cavity includes the fourth arc 30 and the fifth arc 40 , then in step S256 , the arc length of the fourth arc 30 and the arc length of the fifth arc 40 are also adjusted simultaneously.

[0159] Optionally, adjusting at least one of the size of the gap in the metal probe body model and the thickness of the metal probe body model to determine the first preset resonant frequency corresponding to the adjusted metal probe body model specifically comprises the following steps:

[0160] S181. Adjust the length of each gap in the metal probe body model.

[0161] Specifically, the length of the gap refers to the length of the gap in the direction from the side resonant cavity to the arc resonant cavity. Adjusting the length of the gap can reduce or increase the length of the gap. The lengths of the gaps remain equal after adjustment. The change in the gap length will change the magnetic field distribution of the arc resonant cavity, thereby changing the first preset resonant frequency of the metal probe body model. After adjusting the length of each gap in the metal probe body model, the number of times the length of each gap in the metal probe body model is adjusted is recorded.

[0162] S182: Determine whether the number of times the length of each gap in the metal probe body model is adjusted is greater than a first set number.

[0163] Specifically, the first set number of times can be set according to actual needs. When the number of times the length of the gap in the metal probe body model is adjusted is greater than the first set number of times, it indicates that no matter how the adjustment is performed, the first preset frequency that meets the second set condition cannot be determined, and only the first preset frequency close to the second set condition can be determined. Adjusting the length of each gap in the metal probe body model is a coarse adjustment method. If after multiple adjustments, it can only be determined that the difference between the first preset frequency and the required resonant frequency is close to the second set condition, but does not meet the second set condition, then execute S184.

[0164] If it is determined that the number of times the lengths of the gaps in the metal probe body model are adjusted is not greater than the first set number of times, S183 is executed.

[0165] S183, obtaining the first preset resonant frequency corresponding to the adjusted metal probe body model, and then returning to step S160.

[0166] If it is determined that the number of times the lengths of the gaps in the metal probe body model are adjusted is greater than the first set number, S184 is executed.

[0167] S184, adjusting the thickness of the metal probe body model multiple times so that the difference between the first preset resonant frequency corresponding to the adjusted metal probe body model and the required resonant frequency meets the second set condition, and then executing step 170.

[0168] Specifically, the thickness of the metal probe body model will also affect the first preset resonant frequency of the metal probe body model. By increasing or decreasing the thickness of the metal probe body model, the difference between the first preset resonant frequency corresponding to the adjusted metal probe body model and the required resonant frequency satisfies the second setting condition.

[0169] Optionally, after adjusting the thickness of the metal probe body model multiple times so that the difference between the first preset resonant frequency corresponding to the metal probe body model after the thickness of the metal probe body model is adjusted and the required resonant frequency meets the second set condition, it also includes: reducing the length of each gap in each metal probe body model while reducing the thickness of the metal probe body model so that the difference between the first preset resonant frequency corresponding to the adjusted metal probe body model and the required resonant frequency meets the second set condition.

[0170] Specifically, reducing the length of the slit can reduce the first preset resonant frequency, and reducing the thickness of the metal probe body model can increase the first preset resonant frequency. Reducing the length of the slit can increase the Q value of the metal probe body model and the magnetic field strength in the arc resonant cavity. This embodiment reduces the length of each slit in each metal probe body model while reducing the thickness of the metal probe body model, which can ensure that the difference between the first preset resonant frequency and the required resonant frequency meets the second set condition, and can also increase the Q value of the metal probe body model, so that the actual metal probe body produced can improve the EPR detection effect when performing EPR detection on the sample.

[0171] After reducing the length of each gap in each metal probe body model while reducing the thickness of the metal probe body model so that the difference between the first preset resonant frequency corresponding to the adjusted metal probe body model and the required resonant frequency meets the second set condition, execute step S170.

[0172] Optionally, after determining the metal probe body model corresponding to the first preset resonant frequency as the required metal probe body model, the following steps are also included:

[0173] S181. Establish a feed plate model to obtain an electron paramagnetic resonance probe model.

[0174] in, Fig.15 is a schematic diagram of the structure of an electron paramagnetic resonance probe model provided according to an embodiment of the present invention, with reference to Fig.15 The surface of the feeding plate model close to the required metal probe body model 310 is perpendicular to the midline of the circular resonant cavity 311 in the required metal probe body model 310, wherein the feeding plate model includes a dielectric plate model 220 and a microstrip line model 210, and the microstrip line model 210 is located in the dielectric plate model 220.

[0175] Specifically, the dielectric plate model 220 includes a groove, and the microstrip line model 210 is located in the groove. The feed plate model can be established in the HFSS simulation software. After the feed plate model is set, the required metal probe body model can be driven and simulated in the HFSS simulation software.

[0176] S182, moving the position of the microstrip line model in the dielectric plate model multiple times until the electric field distribution diagram and the magnetic field distribution diagram of the arc resonant cavity in the required metal probe body model meet the first set condition, and stopping moving the microstrip line model.

[0177] Specifically, after moving the microstrip line model 210 in the dielectric plate model 220, observe the electric field distribution diagram and magnetic field distribution diagram of the arc resonant cavity in the required metal probe body model. When the electric field distribution diagram and magnetic field distribution diagram of the arc resonant cavity in the required metal probe body model meet the first set condition, that is, a uniformly distributed stable magnetic field appears in the arc resonant cavity, the magnetic field is concentrated in the arc resonant cavity, and the direction of the magnetic field tends to be parallel in the arc resonant cavity, the electric field energy in the arc resonant cavity is the lowest. Stop moving the microstrip line model 210. It should be noted that in the HFSS simulation software, the groove in the dielectric plate model 220 moves simultaneously with the microstrip line model 210.

[0178] S183, repeatedly adjusting the distance between the required metal probe body model and the feeding plate model until the set magnetic field strength of the arc resonant cavity in the required metal probe body model meets the third set condition, and stopping adjusting the distance between the required metal probe body model and the feeding plate model.

[0179] Specifically, the third setting condition is the maximum magnetic field strength, that is, when the set magnetic field strength of the arc resonant cavity in the required metal probe body model reaches the maximum magnetic field strength, the adjustment of the distance between the required metal probe body model and the feeding board model is stopped.

[0180] The setting of the magnetic field strength is determined according to the return loss (S11) of the electron paramagnetic resonance probe model. The method for determining the setting of the magnetic field strength includes:

[0181] Adjust the required distance D between the metal probe body model and the feed plate model to generate the S11 curve. Fig.16 . In the case of different spacing D, multiple S11 curves are generated, which can be referred to Fig.17 , find Fig.17 The distance D1 corresponding to the deepest curve in the figure, and the magnetic field strength of the arc resonant cavity in the electron paramagnetic resonance probe model corresponding to this D1 is the set magnetic field strength.

[0182] S184. Determine whether the set magnetic field strength is equal to the required magnetic field strength.

[0183] Specifically, the required magnetic field strength is the magnetic field strength required by the electron paramagnetic resonance probe in actual application.

[0184] If it is determined that the set magnetic field strength is not equal to the required magnetic field strength, return to step S182.

[0185] Specifically, if the set magnetic field strength is not equal to the required magnetic field strength, it means that the position of the microstrip line model in the dielectric plate model does not meet the requirements, and steps S182 and S183 are repeated until the set magnetic field strength is equal to the required magnetic field strength.

[0186] If it is determined that the set magnetic field strength is equal to the required magnetic field strength, step S185 is executed.

[0187] S185: Determine whether the difference between the second preset resonance frequency and the required resonance frequency of the electron paramagnetic resonance probe model satisfies a fourth setting condition.

[0188] Optionally, the fourth setting condition is d=(1±5‰)b, where d is the second preset resonant frequency.

[0189] If the difference between the second preset resonance frequency of the EPR probe model and the required resonance frequency meets the fourth setting condition, step S186 is executed.

[0190] If the difference between the second preset resonance frequency of the EPR probe model and the required resonance frequency does not satisfy the fourth setting condition, step S187 is executed.

[0191] S186. Produce the required electron paramagnetic resonance probe according to the current electron paramagnetic resonance probe model.

[0192] Specifically, the required electron paramagnetic resonance probe manufactured according to the electron paramagnetic resonance probe model in step S186 can further improve the magnetic field uniformity and magnetic field strength of the resonant cavity accommodating the sample in the electron paramagnetic resonance probe and the EPR detection effect on the sample.

[0193] S187, adjusting at least one of the size of each side resonant cavity of the metal probe body model required in the electron paramagnetic resonance probe model, the shape of each side resonant cavity, the thickness of the required metal probe body model and the length of the gap, and then returning to step S185.

[0194] Specifically, if the difference between the second preset resonant frequency and the required resonant frequency of the electron paramagnetic resonance probe model does not meet the fourth setting condition, fine-tuning is performed first. The fine-tuning method is: adjusting the thickness of the required electron paramagnetic resonance probe or adjusting the size and shape of the edge resonant cavity, thereby adjusting the second preset resonant frequency, so that the difference between the adjusted second preset resonant frequency and the required resonant frequency meets the fourth setting condition. If it still does not meet the condition after adjustment, first increase or decrease the length of the gap, and then perform fine-tuning until the difference between the adjusted second preset resonant frequency and the required resonant frequency meets the fourth setting condition.

[0195] Optionally, after manufacturing the required electron paramagnetic resonance probe according to the current electron paramagnetic resonance probe model, the method further includes:

[0196] A shielding cover is manufactured and made to surround a part of the required electron paramagnetic resonance probe and a dielectric plate; wherein the shielding cover comprises a second through hole and a third through hole; the second through hole is arranged opposite to the third through hole; the orthographic projection of the second through hole on the dielectric plate coincides with the orthographic projection of the third through hole on the dielectric plate; the orthographic projection of the second through hole on the dielectric plate covers the orthographic projection of the circular resonant cavity in the required electron paramagnetic resonance probe on the dielectric plate.

[0197] Specifically, Fig.18 is a schematic diagram of the structure of an electron paramagnetic resonance probe required according to an embodiment of the present invention, with reference to Fig.18 The required electron paramagnetic resonance probe includes a shielding cover 300. The shielding cover can improve the Q value of the circular resonant cavity. The object made according to the dielectric plate model is a dielectric plate.

[0198] Fig.19 FIG. 1 is a schematic diagram of a structure of an apparatus for manufacturing an electron paramagnetic resonance probe according to an embodiment of the present invention, with reference to FIG. Fig.19 The manufacturing device of the electron paramagnetic resonance probe provided in this embodiment includes: a model building module 410, a field distribution map determination module 420, a first control module 430, a second control module 440 and a manufacturing module 450.

[0199] The model building module 410 is used to build a metal probe body model, wherein the metal probe body model includes an arc resonant cavity, at least n identical edge resonant cavities, and a gap connecting the arc resonant cavity and the edge resonant cavity; wherein n is an even number; and the boundary of the edge resonant cavity includes a first arc.

[0200] The field distribution diagram determination module 420 is used to obtain the electric field distribution diagram and the magnetic field distribution diagram of the current metal probe body model in m different setting modes, where m is greater than 1 and m is an integer.

[0201] The first control module 430 is used to determine whether there are electric field distribution maps and magnetic field distribution maps in m different setting modes that meet the first setting condition, and when it is determined that there are electric field distribution maps and magnetic field distribution maps in the m different setting modes that meet the first setting condition, obtain the first preset resonant frequency corresponding to the electric field distribution map and magnetic field distribution map that meet the first setting condition. It is also used to adjust the value of m, the size of each side resonant cavity in the metal probe body model, and at least one of the shape of each side resonant cavity when it is determined that the electric field distribution map and magnetic field distribution map in the m different setting modes do not meet the first setting condition, to obtain a new metal probe body model, and control the field distribution map determination module 420 to obtain the electric field distribution map and magnetic field distribution map of the current metal probe body model in m different setting modes.

[0202] The second control module 440 is used to determine whether the difference between the first preset resonant frequency and the required resonant frequency satisfies the second set condition, and when the difference between the first preset resonant frequency and the required resonant frequency satisfies the second set condition, determine the metal probe body model corresponding to the first preset resonant frequency as the required metal probe body model. It is also used to adjust at least one of the size of the gap in the metal probe body model and the thickness of the metal probe body model when the difference between the first preset resonant frequency and the required resonant frequency does not satisfy the second set condition, determine the first preset resonant frequency corresponding to the adjusted metal probe body model, and continue to determine whether the difference between the first preset resonant frequency and the required resonant frequency satisfies the second set condition.

[0203] The manufacturing module 450 is used to manufacture the actual metal probe body according to the required metal probe body model.

[0204] The device for manufacturing the electron paramagnetic resonance probe provided in this embodiment has corresponding beneficial effects as the method for manufacturing the electron paramagnetic resonance probe provided in any embodiment of the present invention. For technical details not detailed in this embodiment, please refer to the method for manufacturing the electron paramagnetic resonance probe provided in any embodiment of the present invention.

[0205] It should be understood that the various forms of processes shown above can be used to reorder, add or delete steps. For example, the steps described in the present invention can be executed in parallel, sequentially or in different orders, as long as the desired results of the technical solution of the present invention can be achieved, and this document does not limit this.

[0206] The above specific implementations do not constitute a limitation on the protection scope of the present invention. It should be understood by those skilled in the art that various modifications, combinations, sub-combinations and substitutions can be made according to design requirements and other factors. Any modification, equivalent substitution and improvement made within the spirit and principle of the present invention should be included in the protection scope of the present invention.

Claims

1. A method for manufacturing an electron paramagnetic resonance probe, characterized in that: include: A metal probe body model is established, wherein the metal probe body model includes an arc resonant cavity, at least n identical side resonant cavities, and a gap connecting the arc resonant cavity and the side resonant cavity; n is an even number; and the boundary of the side resonant cavity includes a first arc; Obtaining electric field distribution diagrams and magnetic field distribution diagrams of the current metal probe body model in m different setting modes, where m is greater than 1 and m is an integer; Determine whether the electric field distribution diagrams and the magnetic field distribution diagrams in the m different setting modes include the electric field distribution diagram and the magnetic field distribution diagram that meet the first setting condition; If yes, obtaining a first preset resonant frequency corresponding to the electric field distribution diagram and the magnetic field distribution diagram that meet the first setting condition; determining whether a difference between the first preset resonant frequency and the desired resonant frequency satisfies a second set condition; If so, the metal probe body model corresponding to the first preset resonant frequency is determined as the required metal probe body model, and the actual metal probe body is manufactured according to the required metal probe body model.

2. The method for manufacturing an electron paramagnetic resonance probe according to claim 1, characterized in that: When it is determined that none of the electric field distribution diagrams and the magnetic field distribution diagrams under the m different setting modes meets the first setting condition, adjust the value of m, the size of each of the edge resonant cavities in the metal probe body model, and at least one of the shapes of each of the edge resonant cavities to obtain a new metal probe body model, and return to the step of obtaining the electric field distribution diagram and the magnetic field distribution diagram of the current metal probe body model under the m different setting modes; When it is determined that the difference between the first preset resonant frequency and the required resonant frequency does not meet the second set condition, adjust at least one of the size of the gap in the metal probe body model and the thickness of the metal probe body model, determine the first preset resonant frequency corresponding to the adjusted metal probe body model, and return to the step of determining whether the difference between the first preset resonant frequency and the required resonant frequency meets the second set condition.

3. The method for manufacturing an electron paramagnetic resonance probe according to claim 1, characterized in that: The first setting condition is that under the same setting mode, in the magnetic field distribution diagram of the metal probe body model, the magnetic field is concentrated in the arc resonant cavity, the magnetic field intensity in the arc resonant cavity is much stronger than the magnetic field intensity in each of the side resonant cavities, and the magnetic field direction in the arc resonant cavity is the set direction, and the electric field energy in the arc resonant cavity in the electric field distribution diagram of the metal probe body model is less than the set electric field energy.

4. The method for manufacturing an electron paramagnetic resonance probe according to claim 2, characterized in that: The adjusting of the value of m, the size of each of the side resonant cavities in the metal probe body model, and the shape of each of the side resonant cavities to obtain a new metal probe body model specifically includes: Determining whether a boundary of the edge resonant cavity includes a parabola; If not, the radius of the circle where the boundary of each side resonant cavity is located is increased at the same time to obtain a new metal probe body model; If yes, the step of adjusting the arc length of the second arc and the width of the line connecting the first coordinate point and the second coordinate point in the parabola to obtain a new metal probe body model is performed; Determine whether the radius of the circle where the boundary of the edge resonant cavity is located is greater than a set radius value; If yes, the shapes of the boundaries of the side resonant cavities are adjusted simultaneously, so that the boundaries of the side resonant cavities include the second arc, the third arc and the first curve, and a new metal probe body model is obtained; Determine whether the arc length of the second circular arc and the width of the line connecting the first coordinate point and the second coordinate point in the parabola meet a third setting condition, wherein the distance between the line connecting the first coordinate point and the second coordinate point and the vertex of the parabola is a fixed value; If so, adjust the arc length of the second arc and the width of the line connecting the first coordinate point and the second coordinate point in the parabola to obtain a new metal probe body model, and return to the step of obtaining the electric field distribution diagram and magnetic field distribution diagram of the current metal probe body model under m different setting modes.

5. The method for manufacturing an electron paramagnetic resonance probe according to claim 4, characterized in that: The second circular arc and the third circular arc are spaced apart and located in the first circle; the center of the circle where the first circle is located is the same as the center of the circle where the boundary of the circular arc resonance cavity is located; the arc length of the second circular arc is equal to the arc length of the third circular arc; the first end of the second circular arc is connected to the first end of the first curve, and the first end of the third circular arc is connected to the second end of the first curve; The second circular arc and the third circular arc are located on a side of the first curve close to the circular arc resonant cavity; and the first curve is a parabola.

6. The method for manufacturing an electron paramagnetic resonance probe according to claim 4, characterized in that: When it is determined that the radius of the circle where the boundary of the edge resonant cavity is located is not greater than the set radius value, return to the step of obtaining the electric field distribution diagram and the magnetic field distribution diagram of the current metal probe body model in m different setting modes; When it is determined that the arc length of the second arc and the width of the line connecting the first coordinate point and the second coordinate point in the parabola do not meet the third setting condition, set m=hm, and return to the step of obtaining the electric field distribution diagram and magnetic field distribution diagram of the current metal probe body model in m different setting modes, where h is greater than 1 and h is an integer.

7. The method for manufacturing an electron paramagnetic resonance probe according to claim 4, characterized in that: The shape of the boundary of each of the side resonant cavities is simultaneously adjusted so that the boundary of each of the side resonant cavities also includes a fourth arc and a fifth arc; wherein the arc length of the fourth arc is equal to the arc length of the fifth arc; the first end of the second arc is connected to the first end of the fourth arc, the second end of the fourth arc is connected to the first end of the first curve, the first end of the third arc is connected to the first end of the fifth arc, and the second end of the fifth arc is connected to the second end of the first curve.

8. The method for manufacturing an electron paramagnetic resonance probe according to claim 2, characterized in that: The adjusting at least one of the size of the gap in the metal probe body model and the thickness of the metal probe body model to determine the first preset resonant frequency corresponding to the adjusted metal probe body model specifically includes: Adjusting the length of each of the gaps in the metal probe body model; Determining whether the number of times the length of each of the gaps in the metal probe body model is adjusted is greater than a first set number; If not, then obtaining the first preset resonant frequency corresponding to the adjusted metal probe body model, and returning to the step of determining whether the difference between the first preset resonant frequency and the required resonant frequency satisfies the second set condition; If so, the thickness of the metal probe body model is adjusted multiple times so that the difference between the first preset resonant frequency corresponding to the adjusted metal probe body model and the required resonant frequency meets the second setting condition.

9. The method for manufacturing an electron paramagnetic resonance probe according to claim 8, characterized in that: After the thickness of the metal probe body model is adjusted multiple times so that the difference between the first preset resonant frequency and the required resonant frequency corresponding to the metal probe body model after the thickness of the metal probe body model is adjusted satisfies the second setting condition, the method further includes: The length of each of the gaps in each of the metal probe body models is reduced while the thickness of the metal probe body model is reduced, so that the difference between the first preset resonant frequency corresponding to the adjusted metal probe body model and the required resonant frequency meets the second set condition.

10. The method for manufacturing an electron paramagnetic resonance probe according to claim 1, characterized in that: After determining the metal probe body model corresponding to the first preset resonant frequency as the required metal probe body model, the following further comprises: Establishing a feed plate model, and setting the surface of the feed plate model close to the required metal probe body model to be perpendicular to the perpendicular bisector of the circular resonant cavity in the required metal probe body model, to obtain an electron paramagnetic resonance probe model, wherein the feed plate model includes a dielectric plate model and a microstrip line model, and the microstrip line model is located in the dielectric plate model; Moving the position of the microstrip line model in the dielectric plate model multiple times until the electric field distribution diagram and the magnetic field distribution diagram of the arc resonant cavity in the required metal probe body model meet the first set condition, and stopping moving the microstrip line model; Adjusting the distance between the desired metal probe body model and the feeding plate model multiple times until the set magnetic field strength of the arc resonant cavity in the desired metal probe body model meets the third set condition, and stopping adjusting the distance between the desired metal probe body model and the feeding plate model; Determining whether the set magnetic field strength is equal to the required magnetic field strength; If yes, determining whether the difference between the second preset resonance frequency and the required resonance frequency of the electron paramagnetic resonance probe model satisfies a fourth setting condition; If yes, the required electron paramagnetic resonance probe is manufactured according to the current electron paramagnetic resonance probe model.

11. The method for manufacturing an electron paramagnetic resonance probe according to claim 10, characterized in that: When it is determined that the set magnetic field strength is not equal to the required magnetic field strength, the step of moving the position of the microstrip line model in the dielectric plate model multiple times; When it is determined that the difference between the second preset resonant frequency of the electron paramagnetic resonance probe model and the required resonant frequency does not satisfy the fourth setting condition, adjust at least one of the size of each side resonant cavity of the required metal probe body model in the electron paramagnetic resonance probe model, the shape of each side resonant cavity, the thickness of the required metal probe body model and the length of the gap, and return to the step of determining whether the difference between the second preset resonant frequency of the electron paramagnetic resonance probe model and the required resonant frequency satisfies the fourth setting condition.

12. The method for manufacturing an electron paramagnetic resonance probe according to claim 10, characterized in that: The second setting condition is c=(1±10%)b, where c is the first preset resonant frequency and b is the desired resonant frequency; The fourth setting condition is d=(1±5‰)b, where d is the second preset resonant frequency.

13. The method for manufacturing an electron paramagnetic resonance probe according to claim 10, characterized in that: After manufacturing the required electron paramagnetic resonance probe according to the current electron paramagnetic resonance probe model, the method further includes: A shielding cover is manufactured, and the shielding cover is made to surround a portion of the desired electron paramagnetic resonance probe and the dielectric plate; wherein the shielding cover comprises a second through hole and a third through hole; the second through hole is arranged opposite to the third through hole; the orthographic projection of the second through hole on the dielectric plate coincides with the orthographic projection of the third through hole on the dielectric plate; the orthographic projection of the second through hole on the dielectric plate covers the orthographic projection of the circular resonant cavity in the desired electron paramagnetic resonance probe on the dielectric plate.

14. A device for manufacturing an electron paramagnetic resonance probe, characterized in that: include: A model building module, a field distribution map determination module, a first control module, a second control module and a production module; The model building module is used to build a metal probe body model, wherein the metal probe body model includes an arc resonant cavity, at least n identical edge resonant cavities, and a gap connecting the arc resonant cavity and the edge resonant cavity; wherein n is an even number; and the boundary of the edge resonant cavity includes a first arc; The field distribution diagram determination module is used to obtain the electric field distribution diagram and the magnetic field distribution diagram of the current metal probe body model in m different setting modes, where m is greater than 1 and m is an integer; The first control module is used for obtaining a first preset resonant frequency corresponding to the electric field distribution diagram and the magnetic field distribution diagram that meet the first setting condition when it is determined that the electric field distribution diagram and the magnetic field distribution diagram in the m different setting modes meet the first setting condition; The second control module is used to determine the metal probe body model corresponding to the first preset resonant frequency as the required metal probe body model when the difference between the first preset resonant frequency and the required resonant frequency meets a second set condition; The manufacturing module is used to manufacture the actual metal probe body according to the required metal probe body model.

15. The manufacturing device according to claim 14, characterized in that: The first control module is also used to adjust the value of m, the size of each of the side resonant cavities in the metal probe body model, and at least one of the shapes of each of the side resonant cavities when it is determined that the electric field distribution diagrams and the magnetic field distribution diagrams in the m different setting modes do not meet the first setting condition, to obtain a new metal probe body model, and control the field distribution diagram determination module to obtain the electric field distribution diagram and the magnetic field distribution diagram of the current metal probe body model in the m different setting modes; The second control module is also used to adjust at least one of the size of the gap in the metal probe body model and the thickness of the metal probe body model when the difference between the first preset resonant frequency and the required resonant frequency does not meet the second set condition, determine the first preset resonant frequency corresponding to the adjusted metal probe body model, and continue to determine whether the difference between the first preset resonant frequency and the required resonant frequency meets the second set condition.

Images