CN218312447U - Sample holder for grinding and thinning transmission electron microscope sample - Google Patents
Sample holder for grinding and thinning transmission electron microscope sample Download PDFInfo
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- CN218312447U CN218312447U CN202222952467.9U CN202222952467U CN218312447U CN 218312447 U CN218312447 U CN 218312447U CN 202222952467 U CN202222952467 U CN 202222952467U CN 218312447 U CN218312447 U CN 218312447U
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Abstract
The utility model provides a sample holder for TEM sample grinds appearance attenuate, the holder includes the elasticity cap, with elasticity cap sealing connection's cavity cylinder, sealing connection at the bottom plate of cavity cylinder bottom, elasticity cap, cavity cylinder and bottom plate form the air cavity jointly, the bottom surface of bottom plate contains smooth plane, just is in be provided with one or more gas pocket on the smooth plane of bottom plate, the gas pocket is used for the outer gas flow of air cavity and holder. The holder is suitable for carrying, grips easily, is difficult for hindering the hand, and convenient operation gets to press from both sides transmission electron microscope sample swift and connect steadily, has improved the preparation efficiency of sample thin slice greatly, and the sample quality of preparation is good. And the material used by the clamp holder is widely distributed, easy to obtain, low in production cost, light in weight, safe and environment-friendly. The clamp holder is also particularly suitable for an automatic sample grinding machine to realize automatic sample grinding.
Description
Technical Field
The utility model belongs to scientific research experiment appurtenance field, concretely relates to a sample holder for transmission electron microscope sample grinds appearance attenuate.
Background
In the field of material science, experiments are one of indispensable scientific research means, a transmission electron microscope can observe micro-scale and nano-scale internal structures and tissues of materials, and samples of the transmission electron microscope are materials such as metal sheets, ceramic sheets, molecular sieve powder and the like. For a flaky transmission electron microscope sample, the preparation of the sample is one of the key factors for determining the success of the transmission electron microscope characterization, a mechanical method is the most commonly used method for preparing a transmission electron microscope metal sample sheet, the thickness of the flaky transmission electron microscope sample before sample grinding and thinning is generally several millimeters, the thickness of the sheet after sample grinding and thinning needs to be less than 100 micrometers, the conventional sample grinding and thinning method needs to be repeatedly fixed by using an adhesive, the operation is troublesome and time-consuming, the quality of the prepared sample sheet is not easy to control, and the technical problem to be solved urgently is solved.
Therefore, there is a need in the art for a sample holder for use in the reduction of ground samples for transmission electron microscopy.
SUMMERY OF THE UTILITY MODEL
The utility model provides a sample holder for TEM sample grinds appearance attenuate, the holder includes the elasticity cap, with elasticity cap sealing connection's cavity cylinder, sealing connection at the bottom plate of cavity cylinder bottom, elasticity cap, cavity cylinder and bottom plate form the air cavity jointly, the bottom surface of bottom plate contains smooth plane, just is in be provided with one or more gas pocket on the smooth plane of bottom plate, the gas pocket is used for the outer gas flow of air cavity and holder.
The utility model discloses in, elasticity cap 1 and 2 sealing connection of cavity cylinder, its sealing connection's mode can be fixed connection's such as bonding mode, also can be detachable, for example the elasticity cap cramps the cavity cylinder or the chucking, as long as the two sealing connection leak tight can, its concrete connection mode is in the utility model discloses in unrestricted.
In a specific embodiment, a retaining member is circumferentially and continuously arranged on the inner side wall of the hollow cylinder, and the elastic cap is fixedly and hermetically arranged on the retaining member.
In a particular embodiment, the bottom of the elastic cap is adhesively secured to the retainer.
In a specific embodiment, the top height of the elastic cap is not higher than the top edge height of the hollow cylinder.
Therefore, the clamp which clamps the sample can be conveniently used for grinding and thinning the transmission electron microscope sample in the automatic sample grinding machine.
In a specific embodiment, the hollow cylinder is one of a cylinder, a truncated cone, a prism and a truncated pyramid, the hollow cylinder is made of one of metal, ceramic, plastic and glass, and the outer wall of the hollow cylinder is provided with a groove or a protrusion for a user to hold.
In a specific embodiment, the hollow cylinder is a prism or a prism table with a regular polygon horizontal section.
In a specific embodiment, the bottom plate is made of one of metal, ceramic, plastic and glass, and the air holes include a plurality of air holes distributed in a dispersed manner or are strip-shaped air holes in an X shape, an annular shape or a regular polygonal annular shape.
The utility model discloses in, the material of cavity cylinder and bottom plate all only require have certain hardness can, do not have other substantive requirements, the steel material is selected for use for example to the two.
In a specific embodiment, the hollow cylinder is cylindrical or truncated cone-shaped, and the elastic cap is hemispherical accordingly.
In a specific embodiment, the elastic cap is a rubber cap.
In a specific embodiment, a limiting table for positioning the transmission electron microscope sample thinned to be ground is arranged on the bottom plate.
The utility model discloses in, spacing platform is except being used for carrying on spacingly to the sample, still has the function that the protection bottom plate is not worn and torn. And the depth of the limiting table is not too high and needs to be smaller than the final thickness of the sample, otherwise, the sample cannot be ground during sample grinding.
The holder is suitable for carrying, grips easily, is difficult for hindering the hand, and convenient operation gets to press from both sides transmission electron microscope sample swift and connect steadily, has improved the preparation efficiency of sample thin slice greatly, and the sample quality of preparation is good. And the material used by the clamp holder is widely distributed, easy to obtain, low in production cost, light in weight, safe and environment-friendly. The clamp holder is also particularly suitable for an automatic sample grinding machine to realize automatic sample grinding.
Drawings
Fig. 1 is a schematic view of the structure of the clamp of the present invention.
Fig. 2 is a schematic structural view of another perspective of the holder according to the present invention.
Fig. 3 is a schematic view of the connection between the elastic cap and the hollow cylinder inside the holder of the present invention.
Fig. 4 is a schematic diagram of the holder of the present invention after holding the transmission electron microscope sample.
In the figure: the device comprises an elastic cap 1, a hollow column body 2, a retaining piece 21, a bottom plate 3, an air hole 31, a limiting table 32 and a sample 4.
Detailed Description
The invention will be described more fully and in detail with reference to the accompanying drawings.
Fig. 1 to 4 provide a sample holder for sample grinding and thinning of a transmission electron microscope sample, the holder includes an elastic cap, a hollow cylinder hermetically connected with the elastic cap, and a bottom plate hermetically connected to the bottom of the hollow cylinder, the elastic cap, the hollow cylinder and the bottom plate together form an air cavity, the bottom surface of the bottom plate includes a smooth plane, and one or more air holes are arranged on the smooth plane of the bottom plate, and the air holes are used for air flow outside the air cavity and the holder. The elastic cap is specifically, for example, a rubber cap. In fig. 1-4, the diameter of the hollow cylinder is 25.4mm, for example, and a plurality of air holes can be arranged to be circumferentially uniformly distributed, and other arrangement modes can also be adopted, without limitation in the present invention.
As shown in fig. 2 and 4, a circular step-shaped limiting platform is arranged on the smooth bottom surface of the bottom plate (the plane containing the air holes on the bottom surface of the bottom plate is integrally recessed upwards to form a circular step), so that the sample is not deviated, the sample grinding is convenient, for example, the sample grinding is convenient on an automatic sample grinding machine, and the samples such as a ceramic plate, a metal sheet and the like are thinned to be less than 0.1mm from the thickness of several millimeters. In addition, the sample used on the automatic sample grinding machine generally needs to be cut into the same shape and size as the limiting table on the bottom surface of the clamp holder and then subjected to sample grinding and thinning. And the sample size must cover all the air holes to ensure air tightness.
In order to ensure that the holder does not detach from the specimen during operation, the bottom surface of the holder base plate is polished. The cylindrical holder shown in fig. 1 to 4 is most suitable for holding a round sheet-like transmission electron microscope specimen.
The utility model provides a holder utilizes vacuum adsorption principle centre gripping transmission electron microscope sample. During operation, the rubber cap at the top end of the holder is squeezed by fingers, then the transmission electron microscope sample is placed at the bottom of the holder, the sample is tightly attached to the holder, then the rubber cap is released, the air pressure in the air cavity inside the holder is reduced, the sample is firmly adsorbed on the holder, and the effect of stabilizing the holder is achieved, as shown in fig. 4. When the transmission electron microscope sample is thinned to the required thickness, the rubber cap at the top of the clamp is pressed again, and the sample can be easily taken down.
Especially, when the transmission electron microscope sample is thinned to be less than 0.1mm, the sample is polished and thinned mainly by manually pressing the sample in the prior art, so that the phenomenon that the sample is damaged due to uneven stress is easy to occur, and the phenomenon that the sample is abraded and deviated is easy to occur. The utility model discloses a holder can conveniently snatch transmission electron microscope sample, has both made things convenient for manual grabbing to hold like this and has ground appearance, can also all set up cavity cylinder and sample into being fit for installing the shape on the automatic sample grinder, makes the holder can centre gripping transmission electron microscope sample be arranged in the automatic sample grinder, realizes automatic sample grinder.
The foregoing is a more detailed description of the invention, taken in conjunction with the specific preferred embodiments, and it is not intended that the invention be limited to the specific embodiments shown and described. To the utility model belongs to the technical field of ordinary technical personnel, do not deviate from the utility model discloses under the prerequisite of design, can also make a plurality of simple deductions and replacement, all should regard as belonging to the utility model discloses a protection scope.
Claims (10)
1. The utility model provides a sample holder for TEM sample grinds appearance attenuate, its characterized in that, the holder includes elasticity cap (1), with elasticity cap (1) sealing connection's cavity cylinder (2), sealing connection bottom plate (3) in cavity cylinder (2) bottom, elasticity cap (1), cavity cylinder (2) and bottom plate (3) form the air cavity jointly, the bottom surface of bottom plate (3) contains smooth plane, just is in be provided with one or more gas pocket (31) on the smooth plane of bottom plate (3), the gas pocket is used for the air cavity flows with the outer gas of holder.
2. The specimen holder for the grinding and thinning of transmission electron microscope specimens, according to claim 1, is characterized in that a retaining member (21) is circumferentially and continuously arranged on the inner side wall of the hollow cylinder (2), and the elastic cap (1) is fixedly and hermetically arranged on the retaining member (21).
3. The holder for the sample subjected to grinding and thinning of the transmission electron microscope sample according to claim 2, wherein the bottom of the elastic cap (1) is fixedly bonded with the retaining piece (21).
4. The transmission electron microscope sample grinding thinning sample holder according to claim 1, characterized in that the top height of the elastic cap (1) is not higher than the top edge height of the hollow cylinder (2).
5. The sample holder for the grinding and thinning of the transmission electron microscope sample according to claim 1, wherein the hollow cylinder (2) is one of a cylinder, a truncated cone, a prism or a truncated pyramid, the hollow cylinder (2) is made of one of metal, ceramic, plastic and glass, and a groove or a protrusion convenient for a user to hold is arranged on the outer wall of the hollow cylinder (2).
6. The holder for the sample subjected to grinding and thinning of the transmission electron microscope sample according to claim 5, wherein the hollow cylinder (2) is a prism or a prism frustum with a regular polygon horizontal section.
7. The specimen holder for grinding and thinning the transmission electron microscope specimen, according to claim 1, wherein the bottom plate (3) is made of one of metal, ceramic, plastic and glass, and the air holes (31) comprise a plurality of air holes distributed dispersedly or the air holes (31) are strip-shaped air holes in an X shape, a circular shape or a regular polygon shape.
8. The holder for the ground and thinned sample for the transmission electron microscope sample is characterized in that the hollow cylinder (2) is cylindrical or truncated cone-shaped, and the elastic cap (1) is hemispherical correspondingly.
9. The holder for the sample subjected to grinding and thinning of the transmission electron microscope sample according to claim 1, wherein the elastic cap (1) is a rubber cap.
10. The transmission electron microscope sample grinding and thinning sample holder according to claim 1, characterized in that a limiting table (32) for positioning the transmission electron microscope sample (4) to be ground and thinned is arranged on the bottom plate (3).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202222952467.9U CN218312447U (en) | 2022-11-07 | 2022-11-07 | Sample holder for grinding and thinning transmission electron microscope sample |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202222952467.9U CN218312447U (en) | 2022-11-07 | 2022-11-07 | Sample holder for grinding and thinning transmission electron microscope sample |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN218312447U true CN218312447U (en) | 2023-01-17 |
Family
ID=84828462
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202222952467.9U Active CN218312447U (en) | 2022-11-07 | 2022-11-07 | Sample holder for grinding and thinning transmission electron microscope sample |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN218312447U (en) |
-
2022
- 2022-11-07 CN CN202222952467.9U patent/CN218312447U/en active Active
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