Sample holder for magnetic circular dichroism spectrum test and magnetic circular dichroism spectrum tester

Abstract

The utility model provides a sample holder for a magnetic circular dichroism spectrum test and a magnetic circular dichroism spectrum tester. The sample holder comprises a shell and a clamping assembly, a sample chamber is arranged in the shell, and light path windows are arranged on a front side plate and a rear side plate of the shell. The clamping assembly comprises a first clamping piece and a second clamping piece, the first clamping piece and the second clamping piece are both movably connected with the shell, and the moving direction of the first clamping piece and the moving direction of the second clamping piece are in the left-right direction. During use, a sample is placed in the sample chamber and is aligned with the light path window, and the first clamping piece and the second clamping piece are adjusted to clamp the sample. Due to the fact that the first clamping piece and the second clamping piece are arranged, rapid adaptation to samples of different sizes can be achieved, the sample preparation flexibility and the experiment efficiency are greatly improved, solid samples can be directly clamped between the first clamping piece and the second clamping piece and do not need to be fixed in an adhesive mode, and the problem that the samples are polluted by double-faced adhesive tape is solved.

Description

Technical Field

[0001] The utility model relates to the technical field of spectrum testing equipment, in particular to a sample rack for magnetic circular dichroism spectrum testing and a magnetic circular dichroism spectrum tester. Background Art

[0002] In modern scientific research, magnetic circular dichroism (MCD), a highly sensitive spectroscopic technique, plays an irreplaceable role in revealing the electronic structure, spin state, and intermolecular interaction mechanisms of materials under the influence of magnetic fields. By measuring the difference in absorption intensity between left-handed and right-handed circularly polarized light in a sample under the influence of a magnetic field, this technique can directly probe a material's magnetic properties and the spin dependence of electronic transitions. Consequently, it has found widespread application in fields such as chemistry, physics, materials science, and life sciences. MCD has become an indispensable research tool in the study of magnetic materials, organometallic compounds, biomacromolecules, and protein structures.

[0003] However, to fully realize the potential of MCD, a key prerequisite is a sample holder capable of stably and precisely securing the sample. Currently available sample holder solutions are often designed specifically for quartz cuvettes of specific thickness. While this one-to-one matching approach ensures measurement accuracy, it also significantly limits sample preparation flexibility. Furthermore, there is a lack of sample holders specifically designed for solid samples (such as liquid crystals and solid films). Researchers typically adhere thin film samples to a liquid holder for securement. This type of holder imposes strict restrictions on sample size and shape, making it inconvenient for testing large or irregularly shaped samples. Furthermore, the use of double-sided tape not only complicates the operation but can also lead to sample contamination and holder damage, compromising the accuracy and repeatability of test results. Double-sided tape residue is difficult to completely remove and can contaminate subsequent test samples, reducing instrument efficiency. These solutions significantly limit the application of MCD spectroscopy to diverse sample systems, increasing experimental complexity and cost. Utility Model Content

[0004] The present invention aims to solve at least one of the technical problems existing in the prior art. To this end, the present invention provides a sample holder and a magnetic circular dichroism spectrometer for magnetic circular dichroism spectroscopy testing. This invention aims to address the problems in the related art whereby sample holders of a specific size can only hold quartz cuvettes of a specific size, limiting flexibility in sample selection, and solid samples must be glued to the liquid holder for fixation, which can contaminate the sample with double-sided adhesive.

[0005] The utility model provides a sample holder for magnetic circular dichroism spectrum testing, comprising:

[0006] A housing, wherein a sample chamber is provided inside the housing, and light path windows are provided on the front side plate and the rear side plate of the housing, the two light path windows are arranged opposite each other, and the light path windows communicate with the inner and outer sides of the sample chamber;

[0007] The clamping assembly includes a first clamping member and a second clamping member, the clamping ends of the first clamping member and the second clamping member are both located in the sample chamber, and the first clamping member and the second clamping member are both movably connected to the shell, and the movement direction of the first clamping member and the second clamping member is along the left and right direction.

[0008] According to the sample rack for magnetic circular dichroism spectrum testing provided by the utility model, a handle is provided on one of the side panels of the shell.

[0009] According to the sample holder for magnetic circular dichroism spectroscopy testing provided by the present invention, one end of the handle is connected to the top of the shell, and the other end of the handle extends in a direction away from the bottom of the shell.

[0010] According to the sample rack for magnetic circular dichroism spectrum testing provided by the utility model, the top of the sample chamber is open.

[0011] According to the sample holder for magnetic circular dichroism spectrum testing provided by the utility model, the top of one of the light path windows is open, and the top of the other light path window is closed.

[0012] According to the sample rack for magnetic circular dichroism spectrum testing provided by the utility model, the tops of the two light path windows are both closed.

[0013] According to the sample holder for magnetic circular dichroism spectroscopy testing provided by the present invention, the first clamping member and the second clamping member are both bolts, the two bolts are respectively threadedly connected to the left plate and the right plate of the shell, and the threaded ends of the bolts are both located in the sample chamber.

[0014] According to the sample holder for magnetic circular dichroism spectrum testing provided by the utility model, the axes of the two bolts are collinear.

[0015] According to the sample holder for magnetic circular dichroism spectroscopy testing provided by the present invention, the first clamping member and the second clamping member are both linear telescopic mechanisms, the fixed ends of the two linear telescopic mechanisms are respectively connected to the inner side surfaces of the left plate and the right plate of the shell, and the telescopic ends of the two linear telescopic mechanisms are arranged opposite to each other.

[0016] The utility model also provides a magnetic circular dichroism spectrum tester, comprising the sample rack for magnetic circular dichroism spectrum testing as described above.

[0017] The utility model has the following advantages due to the adoption of the above technical solution:

[0018] The sample holder for magnetic circular dichroism spectroscopy testing provided by the utility model comprises a shell and a clamping assembly. A sample chamber is provided inside the shell, and light path windows are provided on the front side plate and the rear side plate of the shell, the two light path windows are arranged opposite each other, and the light path windows communicate with the inner and outer sides of the sample chamber. The clamping assembly comprises a first clamping member and a second clamping member, the clamping ends of the first clamping member and the second clamping member are both located in the sample chamber, and the first clamping member and the second clamping member are both movably connected to the shell, and the moving direction of the first clamping member and the second clamping member is along the left and right direction. When in use, a quartz cuvette containing a liquid or a solid sample can be placed in the sample chamber and located between the two light path windows, and then the distance between the clamping ends of the first clamping member and the second clamping member is adjusted so that the first clamping member and the second clamping member clamp the sample in the sample chamber. Due to the provision of the first clamping member and the second clamping member, quartz cuvettes or fixed samples of different sizes can be quickly adapted, greatly improving the flexibility of sample preparation and experimental efficiency. Moreover, solid samples can be directly clamped between the first clamping member and the second clamping member without the need to use adhesive to fix them, thus solving the problem of double-sided tape contaminating the sample.

[0019] Furthermore, in the magnetic circular dichroism spectrum tester provided by the present invention, since the sample holder for magnetic circular dichroism spectrum testing as described above is provided, it has the same advantages as described above. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] In order to more clearly illustrate the technical solutions of the present invention or the prior art, the following briefly introduces the drawings required for use in the embodiments or the description of the prior art. Obviously, the drawings described below are some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying any creative work.

[0021] Figure 1 The figure is a schematic structural diagram of a sample holder for magnetic circular dichroism spectroscopy testing provided by one embodiment of the present invention.

[0022] Reference numerals:

[0023] 100: housing; 110: sample chamber; 120: front side panel; 130: rear side panel; 140: left side panel; 150: right side panel; 160: optical path window; 170: handle;

[0024] 210: first clamping member; 220: second clamping member. DETAILED DESCRIPTION

[0025] To make the purpose, technical solutions, and advantages of the present invention more clear, the following will be combined with the accompanying drawings to clearly and completely describe the technical solutions of the present invention. Obviously, the embodiments described are only some of the embodiments of the present invention, not all of them. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.

[0026] In the description of the present invention, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "clockwise", "counterclockwise", "axial", "radial", "circumferential" and the like to indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as a limitation to the present invention.

[0027] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of the technical features being referred to. Thus, a feature specified as "first" or "second" may explicitly or implicitly include one or more of such features. In the description of this utility model, "plurality" means more than two, unless otherwise specifically defined.

[0028] In this utility model, unless otherwise specified or limited, the terms "installed," "connected," "connect," "fixed," etc. should be understood in a broad sense. For example, they can refer to fixed connection, detachable connection, or integration; mechanical connection, electrical connection; direct connection, indirect connection through an intermediate medium, internal communication between two components, or interaction between two components. Those skilled in the art will understand the specific meanings of the above terms in this utility model based on specific circumstances.

[0029] In the present invention, unless otherwise expressly specified or limited, when a first feature is "above" or "below" a second feature, it may mean that the first and second features are in direct contact, or the first and second features are in indirect contact through an intermediary. Furthermore, when a first feature is "above," "above," or "above" a second feature, it may mean that the first feature is directly above or diagonally above the second feature, or simply means that the first feature is at a higher level than the second feature. When a first feature is "below," "below," or "below" a second feature, it may mean that the first feature is directly below or diagonally below the second feature, or simply means that the first feature is at a lower level than the second feature.

[0030] In the description of this specification, the description with reference to the terms "one embodiment", "some embodiments", "example", "specific example", or "some examples" means that the specific features, structures, materials or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the present invention. In this specification, the schematic representations of the above terms do not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described can be combined in any one or more embodiments or examples in a suitable manner. In addition, those skilled in the art can combine and combine different embodiments or examples described in this specification and features of different embodiments or examples without contradiction.

[0031] The utility model provides a sample holder for magnetic circular dichroism spectrum testing, comprising a shell and a clamping assembly. A sample chamber is provided inside the shell, and light path windows are provided on the front side plate and the rear side plate of the shell, the two light path windows are arranged opposite each other, and the light path windows communicate with the inner and outer sides of the sample chamber. The clamping assembly comprises a first clamping member and a second clamping member, the clamping ends of the first clamping member and the second clamping member are both located in the sample chamber, and the first clamping member and the second clamping member are both movably connected to the shell, and the moving direction of the first clamping member and the second clamping member is along the left and right direction. When in use, a quartz cuvette containing a liquid or a solid sample can be placed in the sample chamber and located between the two light path windows, and then the distance between the clamping ends of the first clamping member and the second clamping member is adjusted so that the first clamping member and the second clamping member clamp the sample in the sample chamber. Due to the provision of the first clamping member and the second clamping member, quartz cuvettes or fixed samples of different sizes can be quickly adapted, greatly improving the flexibility of sample preparation and experimental efficiency. Moreover, solid samples can be directly clamped between the first clamping member and the second clamping member without the need to use adhesive to fix them, thus solving the problem of double-sided tape contaminating the sample.

[0032] The following combination Figure 1 The utility model describes a sample holder for magnetic circular dichroism spectrum testing.

[0033] An embodiment of the present invention provides a sample holder for magnetic circular dichroism spectroscopy testing, comprising a housing 100 and a clamping assembly.

[0034] A sample chamber 110 is provided inside the shell 100 , and light path windows 160 are provided on the front side plate 120 and the rear side plate 130 of the shell 100 . The two light path windows 160 are arranged opposite each other, and the light path windows 160 connect the inside and outside of the sample chamber 110 .

[0035] Specifically, the shell 100 can be a rectangular structure, and a sample chamber 110 is provided inside the shell 100. The sample chamber 110 can also be a rectangular shape. Light path windows 160 can be provided on the front side plate 120 and the rear side plate 130 of the shell 100. The light path windows 160 can be rectangular openings. The two light path windows 160 are aligned front and back, and the two light path windows 160 connect the inside and outside of the sample chamber 110.

[0036] The clamping assembly includes a first clamping member 210 and a second clamping member 220. The clamping ends of the first clamping member 210 and the second clamping member 220 are both located in the sample chamber 110, and the first clamping member 210 and the second clamping member 220 are both movably connected to the shell 100. The moving direction of the first clamping member 210 and the second clamping member 220 is along the left and right direction.

[0037] When in use, the quartz cuvette containing liquid or the solid sample can be placed in the sample chamber 110 first, and the quartz cuvette or the solid sample can be located between the first clamping member 210 and the second clamping member 220, and between the two optical path windows 160. Then, the clamping ends of the first clamping member 210 and the second clamping member 220 can be moved toward each other until the first clamping member 210 and the second clamping member 220 clamp the quartz cuvette or the solid sample.

[0038] The sample holder for magnetic circular dichroism spectroscopy testing provided by the present invention can achieve rapid adaptation to quartz cuvettes or solid samples of different sizes by providing a clamping assembly, greatly improving the flexibility of sample preparation and experimental efficiency. In addition, the solid sample can be directly clamped between the first clamping member 210 and the second clamping member 220 without the need for gluing, thus solving the problem of double-sided tape contaminating the sample.

[0039] In some embodiments, a handle 170 may be provided on the housing 100 , and the tester may use the handle 170 to place the housing 100 with the sample fixed thereon into the sample chamber of the magnetic circular dichroism spectrometer.

[0040] Specifically, the handle 170 may be a rod-shaped structure, one end of which may be connected to the top of the left side plate 140 of the housing 100 , and the other end of which extends upward.

[0041] In some embodiments, the top of the sample chamber 110 can be open or closed. When the top of the sample chamber 110 is open, the tester can place the sample from the top of the sample chamber 110. When the top of the sample chamber 110 is closed, the tester can place the sample into the sample chamber 110 through the optical path window 160.

[0042] Of course, in a preferred embodiment, the top of the sample chamber 110 is an open structure. If the top of the sample chamber 110 is closed and the length of the sample in the left-right direction is greater than the length of the light path window 160 in the left-right direction, the tester will not be able to place the sample into the sample chamber 110 through the light path window 160. If the top of the sample chamber 110 is open, the length of the top opening in the left-right direction is greater than the length of the light path window 160 in the left-right direction, allowing the sample to be placed in a larger volume.

[0043] In some embodiments, the top of the light path window 160 can be open or closed. When the top of the light path window 160 is closed, the portion that closes the light path window 160 can be used as a blocking member to limit the position of the sample placed in the sample chamber 110 along the front-to-back direction.

[0044] For example, the top of the light path window 160 located on the rear side is closed, while the top of the light path window 160 located on the front side is open. When the sample is tested, the sample can be inserted into the sample chamber 110 through the light path window 160 on the front side. When the sample contacts the blocking member at the top of the light path window 160 on the rear side, the blocking member can limit the position of the sample along the front-to-back direction.

[0045] When the first clamping member 210 and the second clamping member 220 clamp the thin film sample, the first clamping member 210 and the second clamping member 220 can limit the movement of the sample in the left and right directions, so that the sample remains perpendicular to the bottom surface of the sample chamber 110, thereby avoiding measurement errors caused by differences in incident angles.

[0046] In a specific embodiment, the outer dimensions of the shell 100 can be 35 mm in length, 8 mm in width, and 30 mm in height. The top of the sample chamber 110 is open, and its dimensions can be 24 mm in length, 6 mm to 7.5 mm in width, and 18 mm in height. The top of the light path window 160 located on the front side is open, and its dimensions can be 9 mm in length and 18 mm in height. The top of the light path window 160 located on the rear side is closed, and its dimensions can be 9 mm in length and 15 mm in height.

[0047] It should be noted that the bottom of the optical path window 160 is flush with the bottom of the sample chamber 110 . The length mentioned above refers to the left-right direction, the height refers to the up-down direction, and the width refers to the front-back direction.

[0048] In some embodiments, the first clamping member 210 and the second clamping member 220 may both be bolts, which are respectively threadedly connected to the left plate 140 and the right plate 150 of the housing 100 , and the threaded ends of the two bolts are located in the sample chamber 110 .

[0049] Specifically, both the first clamping member 210 and the second clamping member 220 are bolts. The bolt of the first clamping member 210 can be inserted into the left plate 140 in a direction perpendicular to the left plate 140 and threadedly connected to the left plate 140. The threaded end of the first clamping member 210 extends into the sample chamber 110. Similarly, the bolt of the second clamping member 220 can be inserted into the right plate 150 in a direction perpendicular to the right plate 150 and threadedly connected to the right plate 150. The threaded end of the bolt extends into the sample chamber 110.

[0050] The axes of the two bolts are collinear. By rotating one or both of the bolts, the distance between the clamping ends of the two bolts can be changed to clamp samples of different sizes. The threaded ends of the two bolts can be moved to a position where they contact each other to clamp thinner samples.

[0051] Moreover, when samples of the same size need to be kept in the same position during testing, the position of one of the bolts can be kept stationary, and the sample can be clamped or loosened by adjusting the position of the other bolt.

[0052] In some embodiments, the first clamping member 210 and the second clamping member 220 can also be a linear telescopic mechanism, for example, a linear push rod, wherein the fixed portion of one linear push rod is used to connect with the inner side surface of the left side plate 140, and the telescopic end extends to the right and retracts to the left, and the fixed portion of the other linear push rod is used to connect with the inner side surface of the right side plate 150, and the telescopic end extends to the left and retracts to the right.

[0053] The sample holder for magnetic circular dichroism spectroscopy testing provided by the utility model has the following advantages:

[0054] The sample chamber 110 of this device is larger than that of existing sample chambers 110. It also incorporates a clamping assembly that allows for quick adaptation to quartz cuvettes of varying sizes, significantly improving sample preparation flexibility and experimental efficiency. Furthermore, the clamping assembly can be adjusted to securely hold various solid samples, such as liquid crystals and thin films, without the need for adhesives like double-sided tape, effectively avoiding the risk of sample contamination and holder damage.

[0055] The setting of the clamping assembly can also ensure that the sample maintains extremely high position stability and angle consistency during the test, effectively reducing measurement errors caused by sample movement or tilt.

[0056] An embodiment of the present invention further provides a magnetic circular dichroism spectrum tester, which has the same advantages as described above because it is provided with the sample holder for magnetic circular dichroism spectrum testing as described above.

[0057] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present application, rather than to limit them. Although the present application has been described in detail with reference to the aforementioned embodiments, those skilled in the art should understand that they can still modify the technical solutions described in the aforementioned embodiments, or make equivalent replacements for some or all of the technical features therein. These modifications or replacements do not deviate the essence of the corresponding technical solutions from the scope of the technical solutions of the embodiments of the present application, and they should all be included in the scope of the claims and specification of the present application. In particular, as long as there is no structural conflict, the various technical features mentioned in the various embodiments can be combined in any way. The present application is not limited to the specific embodiments disclosed herein, but includes all technical solutions that fall within the scope of the claims.

Claims

1. A sample holder for magnetic circular dichroism spectroscopy testing, characterized in that: include: A housing (100), wherein a sample chamber (110) is provided inside the housing (100), and light path windows (160) are provided on the front side plate (120) and the rear side plate (130) of the housing (100), wherein the two light path windows (160) are arranged opposite to each other, and the light path windows (160) communicate with the inner and outer sides of the sample chamber (110); A clamping assembly, the clamping assembly comprising a first clamping member (210) and a second clamping member (220), the clamping ends of the first clamping member (210) and the second clamping member (220) are both located in the sample chamber (110), and the first clamping member (210) and the second clamping member (220) are both movably connected to the housing (100), and the movement direction of the first clamping member (210) and the second clamping member (220) is along the left-right direction.

2. The sample holder for magnetic circular dichroism spectroscopy testing according to claim 1, characterized in that: A handle (170) is provided on one of the side panels of the housing (100).

3. The sample holder for magnetic circular dichroism spectroscopy testing according to claim 2, characterized in that: One end of the handle (170) is connected to the top of the housing (100), and the other end of the handle (170) extends in a direction away from the bottom of the housing (100).

4. The sample holder for magnetic circular dichroism spectroscopy testing according to any one of claims 1 to 3, characterized in that: The top of the sample chamber (110) is open.

5. The sample holder for magnetic circular dichroism spectroscopy testing according to any one of claims 1 to 3, characterized in that: The top of one of the light path windows (160) is open, and the top of the other light path window (160) is closed.

6. The sample holder for magnetic circular dichroism spectroscopy testing according to claim 4, characterized in that: The tops of the two light path windows (160) are both closed.

7. The sample holder for magnetic circular dichroism spectroscopy testing according to claim 1, characterized in that: The first clamping member (210) and the second clamping member (220) are both bolts, and the two bolts are respectively threadedly connected to the left side plate (140) and the right side plate (150) of the housing (100), and the threaded ends of the bolts are both located in the sample chamber (110).

8. The sample holder for magnetic circular dichroism spectroscopy testing according to claim 7, characterized in that: The axes of the two bolts are collinear.

9. The sample holder for magnetic circular dichroism spectroscopy testing according to claim 1, characterized in that: The first clamping member (210) and the second clamping member (220) are both linear telescopic mechanisms, the fixed ends of the two linear telescopic mechanisms being respectively connected to the inner side surfaces of the left side plate (140) and the right side plate (150) of the shell (100), and the telescopic ends of the two linear telescopic mechanisms being arranged opposite to each other.

10. A magnetic circular dichroism spectrometer, characterized in that: The method comprises a sample holder for magnetic circular dichroism spectroscopy testing as described in any one of claims 1 to 9.

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