A plasma-based electric field separation device

Abstract

The invention discloses two plasma-based electric field separation devices, the first of which comprises an insulating base plate and a conductive electrode; one end of the conductive electrode is fixed through a through hole on the insulating base plate; in a working state, the number of the conductive electrodes is equal to the number of plasma jets and corresponds one to one; the second of which further comprises a first conductive electrode plate, the upper surface of which contacts the plasma, one end of the conductive electrode is connected to the lower bottom surface of the first conductive electrode plate, and the other end of the conductive electrode is fixed through a through hole on the insulating base plate; the first conductive electrode plate contacts the plasma and is used to provide an electrical interface for the conductive electrode; the conductive electrode is used to separate the electric field generated by the plasma from the plasma; the insulating base plate is used to isolate active components in the plasma; the electric field separation device of the invention is not only easy to operate, but also greatly broadens the application range of the plasma.

Description

Technical Field

[0001] The present invention belongs to the field of plasma application, and more specifically, relates to a plasma-based electric field separation device. Background Art

[0002] Plasma is composed of a collection of ions, electrons, and non-ionized neutral particles. It has a macroscopic spatial scale and time scale and is often referred to as the fourth state of matter. Plasma can be divided into two categories: thermal equilibrium plasma and non-thermal equilibrium plasma, depending on whether the gas temperature and the electron temperature are equal. The gas temperature of thermal equilibrium plasma is consistent with the temperature of the electrons, and is usually produced by nuclear fusion reactions. The temperature of the electrons in non-thermal equilibrium plasma can be as high as tens of thousands of degrees Celsius, while the gas temperature is much lower than the electron temperature and can even be maintained near room temperature.

[0003] In practical applications, non-thermal equilibrium plasma is usually produced under atmospheric pressure or low pressure conditions by using high voltage to ionize gas molecules or atoms. Since the generation of non-thermal equilibrium plasma is often accompanied by electric fields, ultraviolet radiation, thermal energy, and the generation of various active particles, and has a low gas temperature, its application prospects in industrial applications such as material modification, surface treatment, and plasma biomedical fields have attracted widespread attention in recent years.

[0004] The electric field is one of the important active components of non-thermal equilibrium plasma. There is an electric field inside and around the non-thermal equilibrium plasma. The electric field has a wide range of uses in daily life. In addition to the traditional electrical field, new non-thermal sterilization technology and electroporation technology based on electric fields are gradually being applied to the biomedical field.

[0005] Traditional electric field generating devices have a complex structure, usually consisting of a high-voltage power supply, a transformer, a control circuit, and electrodes of various geometric structures. Moreover, the electric field is usually confined to the limited space between the two electrodes (such as patent documents CN108686837A and CN203787768U), which greatly limits the scope of application of the electric field.

[0006] Current non-thermal equilibrium plasma generating devices are already able to generate various types of non-thermal equilibrium plasmas at atmospheric pressure and are widely used in plasma biomedical research (such as a plasma jet device described in patent document CN101426327A and a handheld plasma torch described in patent document CN102523674A). However, on the one hand, these existing devices cannot separate the electric field from the numerous active components of the non-thermal equilibrium plasma, and on the other hand, the characteristics of the treated object itself (such as humidity) will in turn affect the plasma electric field. This is a problem that needs to be solved urgently in current plasma biomedicine. Summary of the invention

[0007] In view of the defects of the prior art, the purpose of the present invention is to provide a plasma-based electric field separation device, aiming to solve the problem that the application range of plasma is narrow due to the inability to separate the electric field from the plasma in the prior art.

[0008] To achieve the above-mentioned object, the present invention provides a plasma-based electric field separation device, comprising: an insulating bottom plate and a conductive electrode;

[0009] One end of the conductive electrode is fixed through a through hole on the insulating bottom plate; the conductive electrode is used to separate the electric field generated by the plasma jet from the plasma jet; the insulating bottom plate is used to isolate active components in the plasma;

[0010] In the working state, the number of the conducting electrodes is equal to the number of the plasma jets and corresponds one to one.

[0011] Preferably, the insulating base plate is polytetrafluoroethylene alkoxy resin.

[0012] Preferably, the number of the conductive electrodes is greater than or equal to 1. When the number of the conductive electrodes is greater than 1, the arrangement is linear, circular or polygonal.

[0013] Preferably, the conductive electrode is a needle-shaped electrode, and its material is stainless steel, copper, aluminum or tungsten.

[0014] Preferably, the plasma jet generating device comprises a power supply, a current limiting resistor and a high voltage electrode;

[0015] The power supply is located at one end of the current limiting resistor, the other end of the current limiting resistor is connected to one end of the high voltage electrode, and the other end of the high voltage electrode is facing the conducting electrode;

[0016] The power supply is used to provide the voltage for generating the plasma jet; the current limiting resistor is used to control the current size during the discharge process; the high-voltage electrode is used to generate the plasma jet during the discharge;

[0017] When the number of the high-voltage electrodes is greater than 1, the separated electric field distribution can be adjusted by adjusting the distance between each high-voltage electrode and the conductive electrode.

[0018] The plasma jet generating device also includes a second conductive electrode plate, which is located between the power supply and the current limiting resistor and is used to provide an electrical interface for the current limiting resistor.

[0019] The plasma jet generating device comprises a power supply, a high voltage electrode, a working gas source and a gas flow control switch;

[0020] The gas flow control switch is used to adjust the gas flow of the working gas source; the working gas source provides gas for the generation of the plasma jet; the power supply is connected to the high-voltage electrode to provide voltage for the generation of the plasma jet; the high-voltage electrode is used to generate the plasma jet during discharge;

[0021] When the number of the high-voltage electrodes is greater than 1, the separated electric field distribution can be adjusted by adjusting the distance between each high-voltage electrode and the conductive electrode.

[0022] The plasma jet generating device also includes a second conductive electrode plate, which is located between the power supply and the high-voltage electrode and is used to provide an electrical interface for the high-voltage electrode;

[0023] The present invention provides another plasma-based electric field separation device, comprising an insulating bottom plate, a conductive electrode and a first conductive electrode plate;

[0024] The upper surface of the first conductive electrode plate is in contact with the plasma, one end of the conductive electrode is connected to the lower bottom surface of the first conductive electrode plate, and the other end thereof is fixed through a through hole on the insulating bottom plate;

[0025] The first conductive electrode plate contacts the plasma and is used to provide an electrical interface for the conductive electrode; the conductive electrode is used to separate the electric field generated by the plasma from the plasma; and the insulating bottom plate is used to isolate active components in the plasma.

[0026] Preferably, the plasma comprises a plasma jet or a non-jet low-temperature plasma;

[0027] When the plasma is in the form of a jet, the present invention is applicable to the following scenarios: the number of conductive electrodes is 1 and the number of plasma jets is greater than or equal to 1; or the number of plasma jets is 1 and the number of conductive electrodes is greater than 1; or the number of plasma jets and the number of conductive electrodes are both greater than 1 and the numbers are unequal.

[0028] Preferably, the insulating substrate is glass or polytetrafluoroethylene alkoxy resin.

[0029] Preferably, the number of the conductive electrodes is greater than or equal to 1. When the number of the conductive electrodes is greater than 1, the arrangement is linear, circular or polygonal.

[0030] Preferably, the conductive electrode is a needle-shaped electrode, and its material is stainless steel, copper, aluminum or tungsten.

[0031] Preferably, the plasma generating device comprises a power supply, a current limiting resistor and a high voltage electrode;

[0032] The power supply is located at one end of the current limiting resistor, the other end of the current limiting resistor is connected to one end of the high voltage electrode, and the other end of the high voltage electrode is directly facing the first conductive electrode plate;

[0033] The power supply is used to provide the voltage for generating the plasma jet; the current limiting resistor is used to control the current size during the discharge process; the high-voltage electrode is used to generate plasma during the discharge;

[0034] When the number of high-voltage electrodes is greater than 1, the separated electric field distribution is adjusted by adjusting the distance between each high-voltage electrode and the conductive electrode.

[0035] The plasma generating device also includes a second conductive electrode plate, which is located between the power supply and the current limiting resistor and is used to provide an electrical interface for the current limiting resistor.

[0036] The plasma generating device includes a power supply, a high voltage electrode, a working gas source and a gas flow control switch;

[0037] The gas flow control switch is used to adjust the gas flow of the working gas source; the working gas source provides gas for plasma generation; the power supply is connected to one end of the high-voltage electrode to provide voltage for the generation of plasma; the other end of the high-voltage electrode is directly opposite to the first conductive electrode plate to generate plasma during discharge;

[0038] When the number of high-voltage electrodes is greater than 1, the separated electric field distribution is adjusted by adjusting the distance between each high-voltage electrode and the conductive electrode.

[0039] The plasma generating device also includes a second conductive electrode plate, which is located between the power supply and the high voltage electrode and is used to provide an electrical interface for the high voltage electrode;

[0040] Compared with the prior art, the above technical solutions conceived by the present invention can achieve the following

[0041] Beneficial effects:

[0042] 1. The plasma-based electric field separation device provided by the present invention uses an insulating bottom plate to isolate the numerous active components contained in the plasma, and uses a conductive electrode to separate the electric field generated by the plasma from the plasma jet; on the one hand, non-equilibrium plasma can be applied to situations where only the electric field effect needs to be utilized and other active particles need to be avoided or toxic side effects may occur, such as when plasma is directly used to treat cells and other tissues, the instantaneous high temperature that may be generated by the plasma will have a harmful effect on the cells; on the other hand, it solves the problem of interference of the characteristics of the treated object itself (such as humidity) on the plasma electric field when plasma treatment is directly applied in actual applications. The above advantages directly broaden the application scope of non-thermal equilibrium plasma.

[0043] 2. The insulating base plate of the present invention is a polytetrafluoroethylene alkoxy resin, which can be adjusted according to any shape of the surface of the processed object. Therefore, the application scenario of the plasma-based electric field separation device of the present invention is not limited to the case where the processed object is a plane.

[0044] 3. When the number of high-voltage electrodes provided by the present invention is greater than 1, the separated electric field distribution can be adjusted by adjusting the distance between each high-voltage electrode and the conductive electrode, thereby changing the electric field size at a specified position.

[0045] 4. If the present invention needs to be applied to scenarios involving active particles, it is only necessary to add through holes on the insulating base plate to allow the active particles to reach the surface of the treated object, which not only broadens the application scenarios but also facilitates operation. BRIEF DESCRIPTION OF THE DRAWINGS

[0046] Figure 1 It is a schematic structural diagram of the first embodiment provided by the present invention;

[0047] Figure 2 is a radial cross-section of the bottom surface of the insulating bottom plate in the first embodiment provided by the present invention;

[0048] Figure 3 It is a schematic structural diagram of a second embodiment provided by the present invention;

[0049] Figure 4 It is a schematic structural diagram of a third embodiment provided by the present invention;

[0050] Figure 5 is a schematic structural diagram of a fourth embodiment provided by the present invention;

[0051] Figure 6 is a schematic structural diagram of a fifth embodiment provided by the present invention;

[0052] FIG. 7( a ) is an arrangement of the needle-shaped conductive electrodes and the grounding electrodes on the bottom surface of the insulating bottom plate provided by the present invention;

[0053] FIG. 7( b ) is a schematic diagram of adding through holes to an insulating base plate when using active particles provided by the present invention; Description of the drawings:

[0055] 1-power supply; 2-protective resistor; 3-second conductive electrode plate; 4-high voltage wire; 5-current limiting resistor; 6-high voltage electrode; 7-insulating medium; 8-insulating top plate; 9-plasma jet; 10-conductive electrode; 11-insulating bracket; 12-insulating bottom plate; 13-ground electrode; 14-first conductive electrode plate; 15-insulating medium pipe; 16-working gas source; 17-gas flow control switch; 18-insulating medium; 19-first medium pipe; 20-second medium pipe; 21-first vent hole; 22-second vent hole; 23-through hole. DETAILED DESCRIPTION

[0056] In order to make the purpose, technical solution and advantages of the present invention more clearly understood, the present invention is further described in detail below in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain the present invention and are not intended to limit the present invention.

[0057] The present invention provides a plasma-based electric field separation device, comprising: an insulating bottom plate and a conductive electrode;

[0058] One end of the conductive electrode is fixed through a through hole on the insulating bottom plate; the conductive electrode is used to separate the electric field generated by the plasma jet from the plasma jet; the insulating bottom plate is used to isolate active components in the plasma;

[0059] In the working state, the number of the conducting electrodes is equal to the number of the plasma jets and corresponds one to one.

[0060] Preferably, the insulating base plate is polytetrafluoroethylene alkoxy resin; the number of the conductive electrodes is greater than or equal to 1, and when the number of the conductive electrodes is greater than 1, the arrangement is linear, circular or polygonal.

[0061] Preferably, the high voltage electrode is a needle-shaped electrode, and its material is stainless steel, copper, aluminum or tungsten.

[0062] Preferably, the plasma jet generating device comprises: a power supply, a current limiting resistor and a high voltage electrode;

[0063] The power supply is located at one end of the current limiting resistor, the other end of the current limiting resistor is connected to one end of the high voltage electrode, and the other end of the high voltage electrode is directly facing the conducting electrode;

[0064] The power supply is used to provide the voltage for generating the plasma jet; the current limiting resistor is used to control the current size during the discharge process; the high-voltage electrode is used to generate the plasma jet during the discharge;

[0065] When the number of high-voltage electrodes is greater than 1, the separated electric field distribution is adjusted by adjusting the distance between each high-voltage electrode and the conductive electrode.

[0066] Preferably, the plasma jet generating device comprises a power supply, a high voltage electrode, a working gas source and a gas flow control switch;

[0067] The gas flow control switch is used to adjust the gas flow of the working gas source; the working gas source provides gas for the generation of the plasma jet; the power supply is connected to the high-voltage electrode to provide voltage for the generation of the plasma jet; the high-voltage electrode is used to generate the plasma jet during discharge;

[0068] When the number of high-voltage electrodes is greater than 1, the separated electric field distribution is adjusted by adjusting the distance between each high-voltage electrode and the conductive electrode.

[0069] The plasma-based electric field separation device provided by the present invention is applicable to the case where the number of plasma jets is the same as the number of conductive electrodes. When the plasma is in a non-jet form, such as surface discharge plasma generated by dielectric barrier discharge, and when the number of plasma jets is inconsistent with the number of conductive electrodes, waste of plasma or waste of conductive electrodes may occur. In particular, when the number of plasma jets is 1, the output of multiple electric fields cannot achieve stable distribution, and the number of electrical ports is also limited.

[0070] Based on the above drawbacks, the present invention provides another plasma-based electric field separation device, comprising: an insulating bottom plate, a conductive electrode and a first conductive electrode plate;

[0071] The upper surface of the first conductive electrode plate is in contact with the plasma, one end of the conductive electrode is connected to the lower bottom surface of the first conductive electrode plate, and the other end thereof is fixed through a through hole on the insulating bottom plate;

[0072] The first conductive electrode plate contacts the plasma and is used to provide an electrical interface for the conductive electrode; the conductive electrode is used to separate the electric field generated by the plasma from the plasma; and the insulating bottom plate is used to isolate active components in the plasma.

[0073] The plasma is a low-temperature plasma including a plasma jet or a non-jet.

[0074] When the plasma is in the form of a jet, the present invention is applicable to the following scenarios: the number of conductive electrodes is 1 and the number of plasma jets is greater than or equal to 1; or the number of plasma jets is 1 and the number of conductive electrodes is greater than 1; or the number of plasma jets and the number of conductive electrodes are both greater than 1 and the numbers are unequal.

[0075] Preferably, the insulating base plate is polytetrafluoroethylene alkoxy resin; the number of the conductive electrodes is greater than or equal to 1, and when the number of the conductive electrodes is greater than 1, the arrangement is linear, circular or polygonal.

[0076] Preferably, the plasma generating device comprises: a power supply, a current limiting resistor and a high voltage electrode;

[0077] The power supply is located at one end of the current limiting resistor, the other end of the current limiting resistor is connected to one end of the high voltage electrode, and the other end of the high voltage electrode is directly facing the first conductive electrode plate;

[0078] The power supply is used to provide the voltage for generating the plasma jet; the current limiting resistor is used to control the current size during the discharge process; the high-voltage electrode is used to generate plasma during the discharge;

[0079] When the number of high-voltage electrodes is greater than 1, the separated electric field distribution is adjusted by adjusting the distance between each high-voltage electrode and the conductive electrode.

[0080] Preferably, the plasma generating device comprises a power supply, a high voltage electrode, a working gas source and a gas flow control switch;

[0081] The gas flow control switch is used to adjust the gas flow of the working gas source; the working gas source provides gas for plasma generation; the power supply is connected to one end of the high-voltage electrode to provide voltage for the generation of plasma; the other end of the high-voltage electrode is directly opposite to the first conductive electrode plate to generate plasma during discharge;

[0082] When the number of high-voltage electrodes is greater than 1, the separated electric field distribution is adjusted by adjusting the distance between each high-voltage electrode and the conductive electrode.

[0083] The present invention uses the first conductive electrode plate which is equivalent to redistributing the generated plasma electric field and providing the required electrical interface, which will effectively solve the problem of the inconsistency between the number of plasma jets and conductive electrodes and expand the scope of application of the present invention.

[0084] like Figure 1 The first embodiment provided by the present invention is shown, wherein the plasma-based electric field separation device comprises a plasma generation module and an electric field separation module;

[0085] The plasma generating module comprises a DC power supply 1, a protective resistor 2, a second conductive electrode plate 3, a high-voltage wire 4, a current-limiting resistor 5, a high-voltage electrode 6 and an insulating medium 7; the DC power supply 1 is connected to the second conductive electrode plate 3 via the protective resistor 2; the second conductive electrode plate is made of copper, and 25 high-voltage current-limiting resistors 5 arranged in a 5×5 manner are connected below the second conductive electrode plate via the high-voltage wire 4; each current-limiting resistor 5 is connected below a high-voltage electrode 6; the current-limiting resistor 5 and the high-voltage electrode 6 together serve as an independent discharge unit and are fixed in the insulating medium 7; the tip of the high-voltage electrode 6 vertically passes through a through hole on an insulating top plate 8 of the electric field separation module, and plasma 9 is generated at the tip during discharge;

[0086] The electric field separation module includes an insulating support 11, an insulating top plate 8, an insulating bottom plate 12, a conductive electrode 10 and a grounding electrode 13; the long strip insulating support 11 connects the insulating top plate 8 and the insulating bottom plate 12; the insulating top plate 8 is provided with through holes having the same number and arrangement as the high-voltage needle electrodes; 25 needle-shaped conductive electrodes 10 made of stainless steel are distributed on the insulating bottom plate 12 in the same arrangement as the high-voltage electrodes 6; the grounding electrode 13 surrounds the conductive electrode 10 and is fixed on the bottom surface of the insulating bottom plate 12 and is flush with the bottom surface, and the grounding electrode 13 is grounded via a grounding wire; the length of the conductive electrode is 0.5 cm to 10 cm;

[0087] In this embodiment, the resistance of the protection resistor 2 and the current limiting resistor 5 is 100MΩ, and the output voltage of the DC power supply 1 is 12kV; the materials of the insulating medium 7 and the insulating bracket 11, the insulating top plate 8, and the insulating bottom plate 12 are all polytetrafluoroethylene alkoxy resin; when working, the electric field generated by the air plasma 9 is led out from the plasma through the conductive electrode 10, and other active components generated by the plasma, such as ultraviolet radiation and active particles, are blocked by the insulating bottom plate 12; the conductive electrode 10 can directly contact the human skin, and the relatively uniform electric field generated can directly treat the human skin tissue to produce the electroporation effect; the gap between the insulating top plate 8 and the insulating bottom plate 12 is the interval where the plasma jet is generated; the gap can be an open space, directly in contact with the outside, or it can be a closed space by adding insulating baffles around the insulating top plate 8 and the insulating bottom plate 12; the height of the gap is 0.5cm to 2cm;

[0088] Figure 2 This is a radial cross-section of the bottom surface of the insulating bottom plate in the first embodiment of the present invention. The metal grounding electrode 13 is arranged around the conductive electrode 10, fixed on the lower bottom surface of the insulating bottom plate 12 and finally grounded through the grounding wire;

[0089] Figure 3 In the second embodiment provided by the present invention, when it is necessary to generate a strong electric field in a designated area while minimizing the impact on the electric field at other positions, the distance between the high-voltage electrode and the corresponding conductive electrode can be changed by adjusting the length of the high-voltage wire 4 connected between the current-limiting resistor and the second conductive electrode plate, thereby changing the size of the electric field at the designated position; the structural schematic diagram of this embodiment is basically the same as that of the first embodiment, and only the gap between the middle row of high-voltage electrodes 6 and the conductive electrode 10 is reduced by adjusting the wire length, and finally an electric field distribution with high field strength in the middle area and low field strength in the surrounding area can be obtained, and the operation is very convenient;

[0090] Figure 4 This is the third embodiment provided by the present invention. When it is necessary to generate an electric field in a narrow and long area, the structure of this embodiment can be adopted. Compared with the previous two embodiments, this embodiment adds a first conductive electrode plate 14 on the upper surface of the insulating bottom plate 12, and a single needle-shaped conductive electrode 10 is led out from the first conductive electrode plate 14. The appropriate length and cross-sectional shape of the conductive electrode 10 can be selected according to needs. In addition, it can also be as follows Figure 4 As shown in , the upper half of the conductive electrode 10 is wrapped with an insulating medium tube 15;

[0091] Figure 5 In the fourth embodiment provided by the present invention, when the surface of the processed object is a curved surface, the application requirements can be met by changing the shape of the insulating bottom plate 12. In this embodiment, the shape of the insulating bottom plate 12 is an arc-shaped curved surface, which can be used to process objects with cylindrical curved surfaces;

[0092] It should be noted that when the object to be processed is itself well grounded, the grounding electrode 13 in the above embodiment can be omitted.

[0093] Figure 6 This is the fifth embodiment provided by the present invention. The present invention has good compatibility, and the plasma generating module in the device can be most of the existing non-thermal equilibrium plasma devices. In this embodiment, the plasma generating module is changed into the currently very common inert gas plasma jet device, the AC power supply 1 is connected to the rod-shaped high-voltage electrode 6, the high-voltage electrode 6 is wrapped by the second dielectric tube 20 with a single-end seal, the gas flow control switch 17 controls the working gas of the working gas source 16 to enter the first dielectric tube 19, and the plasma jet 9 generated by the discharge enters the electric field separation module and contacts the first conductive electrode plate 14; 5 linearly arranged needle-shaped conductive electrodes 10 are connected below the first conductive electrode plate 14; the area between the insulating top plate 8 and the insulating bottom plate 12 is connected by the insulating medium 18 to form a closed chamber, and vents 21 and 22 are left on the left and right sides, and different types of working gases can be introduced as needed; the grounding electrode 12 is not required in this embodiment; it should be pointed out that the discharge unit composed of the rod-shaped high-voltage electrode 6, the first dielectric tube 19 and the second dielectric tube 20 in this embodiment can also replace the discharge unit composed of the current limiting resistor 5 and the high-voltage electrode 6 before, to generate multiple plasma jets in contact with the first conductive electrode plate 14.

[0094] FIG7(a) shows another arrangement of the needle-shaped conductive electrode 10 and the ground electrode 13 on the bottom surface of the insulating base plate 12 that can be used in all the above-mentioned embodiments. FIG7(b ... through holes 23 added to the insulating base plate so that the active particles can pass through the base plate, which is used in applications where the active particles need to be used simultaneously.

[0095] It will be easily understood by those skilled in the art that the above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions and improvements made within the spirit and principles of the present invention should be included in the protection scope of the present invention.

Claims

1. A plasma-based electric field separation device, characterized in that: include: Insulating base plate and conducting electrodes; One end of the conductive electrode is fixed through a through hole on the insulating bottom plate; The conductive electrode is used to separate the electric field generated by the plasma jet from the plasma jet; the insulating bottom plate is used to isolate the active components in the plasma; In the working state, the number of conducting electrodes is equal to the number of plasma jets and corresponds one to one; The insulating base plate is polytetrafluoroethylene alkoxy resin; The number of the conductive electrodes is greater than or equal to 1. When the number of the conductive electrodes is greater than 1, the arrangement is linear, circular or polygonal.

2. The electric field separation device according to claim 1, characterized in that: The conductive electrode is a needle-shaped electrode, and its material is stainless steel, copper, aluminum or tungsten.

3. The electric field separation device according to claim 1 or 2, characterized in that: The plasma jet generating device comprises: a power supply, a current limiting resistor and a high voltage electrode; The power supply is located at one end of the current limiting resistor, the other end of the current limiting resistor is connected to one end of the high voltage electrode, and the other end of the high voltage electrode is facing the conducting electrode; The power supply is used to provide a voltage for generating a plasma jet; the current limiting resistor is used to control the current during the discharge process; the high-voltage electrode is used to generate a plasma jet during discharge; When the number of the high-voltage electrodes is greater than 1, the separated electric field distribution is adjusted by adjusting the distance between each high-voltage electrode and the conductive electrode.

4. The electric field separation device according to claim 1 or 2, characterized in that: The plasma jet generating device comprises a power supply, a high voltage electrode, a working gas source and a gas flow control switch; The gas flow control switch is used to adjust the gas flow of the working gas source; the working gas source provides gas for the generation of the plasma jet; the power supply is connected to the high-voltage electrode to provide voltage for the generation of the plasma jet; the high-voltage electrode is used to generate the plasma jet during discharge; When the number of the high-voltage electrodes is greater than 1, the separated electric field distribution is adjusted by adjusting the distance between each high-voltage electrode and the conductive electrode.

5. A plasma-based electric field separation device, characterized in that: include: An insulating base plate, a conductive electrode and a first conductive electrode plate; The upper surface of the first conductive electrode plate is in contact with the plasma, one end of the conductive electrode is connected to the lower bottom surface of the first conductive electrode plate, and the other end thereof is fixed through a through hole on the insulating bottom plate; The first conductive electrode plate contacts the plasma and is used to provide an electrical interface for the conductive electrode; the conductive electrode is used to separate the electric field generated by the plasma from the plasma; and the insulating bottom plate is used to isolate active components in the plasma.

6. The electric field separation device according to claim 5, characterized in that: The plasma includes a plasma jet or a non-jet low-temperature plasma.

7. The electric field separation device according to claim 5 or 6, characterized in that: The insulating bottom plate is polytetrafluoroethylene alkoxy resin; the number of the conductive electrodes is greater than or equal to 1, and when the number of the conductive electrodes is greater than 1, the arrangement is linear, circular or polygonal.

8. The electric field separation device according to any one of claims 5 to 7, characterized in that: The plasma generating device comprises: a power supply, a current limiting resistor and a high voltage electrode; The power supply is located at one end of the current limiting resistor, the other end of the current limiting resistor is connected to one end of the high voltage electrode, and the other end of the high voltage electrode is facing the first conductive electrode plate; The power supply is used to provide a voltage for generating plasma; the current limiting resistor is used to control the current during the discharge process; the high-voltage electrode is used to generate plasma during discharge; When the number of high-voltage electrodes is greater than 1, the separated electric field distribution is adjusted by adjusting the distance between each high-voltage electrode and the conductive electrode.

9. The electric field separation device according to any one of claims 5 to 7, characterized in that: The plasma generating device comprises a power supply, a high voltage electrode, a working gas source and a gas flow control switch; The gas flow control switch is used to adjust the gas flow of the working gas source; the working gas source provides gas for plasma generation; the power supply is connected to one end of the high-voltage electrode to provide voltage for the generation of plasma; the other end of the high-voltage electrode is directly opposite to the first conductive electrode plate to generate plasma during discharge; When the number of high-voltage electrodes is greater than 1, the separated electric field distribution is adjusted by adjusting the distance between each high-voltage electrode and the conductive electrode.

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