A sample fixing mold and a scanning probe microscope

Abstract

The utility model relates to scanning probe microscope technical field, concretely is a kind of sample fixing mould and scanning probe microscope, the sample fixing mould includes support panel and clamping assembly, support panel upper end surface is used to place sample, clamping assembly is distributed with multiple, clamping assembly is connected on support panel, clamping assembly includes fixed base, clamping plate, fixed ratchet bar, limiting component and first elastic piece, fixed base is connected on support panel, clamping plate is rotatably connected with fixed base, and clamping plate is made of fixed plate body, movable plate body and clamping head composition.The utility model can quickly remove clamping head from movable plate body and replace it, so that it is convenient to clamp arc-shaped workpiece, when movable plate body moves linearly along fixed plate body, the clamping head of the one end of multiple movable plate bodies is close to each other, can carry out multiple-point contact to the workpiece of sphere and limit its movement, increase the work scene that clamping plate can adapt.

Description

Technical Field

[0001] This utility model relates to the field of scanning probe microscope technology, specifically to a sample fixing mold and a scanning probe microscope. Background Technology

[0002] A scanning probe microscope (SPM) is an instrument used to observe the surface morphology and various physical signals of materials at the nanoscale. It mainly consists of a control station, an optical positioning system, an optical microscopy system, a scanning probe, a probe, and a sample stage. During testing, changes in physical signals are measured using the probe to obtain signal images of corresponding areas of the sample.

[0003] Chinese Patent CN222689768U discloses a sample fixing mold for scanning probe microscopes, including a support surface for supporting the sample. The support surface is provided with several clamps that can open and close to press the sample against it. This mold is used to fix the sample when testing it with a scanning probe microscope, making sample installation, fixing, disassembly, and replacement simple and easy. Preferably, the mold includes a reflector, a light guide groove, and a recess for accommodating a heating element and / or a magnetic field application element. This enables multi-mode microscopic testing of samples under light, heat, and magnetization adjustments, expanding the application scenarios of scanning probe microscopes under different testing conditions and showing promising application prospects.

[0004] However, in the above technical solution, only a few clamps that can open and close on the support surface are set to press the sample on the support surface. When testing the sample with a scanning probe microscope, the sample is fixed by this mold. However, the application scenarios of this device are limited, and it is not stable enough for clamping and fixing spherical or arc-shaped workpieces. Utility Model Content

[0005] The purpose of this invention is to address the problems existing in the background technology by proposing a sample fixing mold and a scanning probe microscope.

[0006] The technical solution of this utility model is as follows: A sample fixing mold includes a support panel, the upper surface of which is used to place the sample; a clamping assembly, which is distributed in multiple parts, is connected to the support panel. The clamping assembly includes a fixed base, a clamping plate, a fixed ratchet, a limiting component, and a first elastic element. The fixed base is connected to the support panel, and the clamping plate is rotatably connected to the fixed base. The clamping plate consists of a fixed plate body, a movable plate body, and a clamping head. The fixed plate body is rotatably connected to the fixed base. The two ends of the first elastic element are respectively connected to the fixed plate body and the support panel. The fixed ratchet is connected to one side of the movable plate body, and the movable plate body is slidably connected to the fixed plate body. The limiting component is connected to the fixed plate body, and the clamping head is detachably connected to the movable plate body. In the use state, the clamping head, movable plate body, and fixed plate body move linearly. The limiting component and the fixed ratchet cooperate to limit the position of the movable plate body to adjust the overall length of the clamping plate.

[0007] Preferably, the fixed plate is composed of a support plate and a splicing plate, which are detachably connected. The support plate and the splicing plate have a receiving groove on their opposite sides to accommodate the movable plate, and the side wall of the receiving groove has a notch.

[0008] Preferably, the limiting component includes a movable ratchet rack that cooperates with a fixed ratchet rack, the movable ratchet rack having a through hole, a support shaft connected inside the through hole, and the support shaft being connected to a support plate; and a second elastic element, the two ends of which are respectively connected to the movable ratchet rack and the support plate.

[0009] Preferably, sliding rods are connected to both sides of the movable plate at the end away from the fixed plate.

[0010] Preferably, the movable plate has a scale on the side away from the support panel.

[0011] Preferably, the clamping head is composed of a first plate and a second plate. The first plate is connected to a plurality of mating rods, which are mated with blind holes opened on the second plate. Both the first plate and the second plate are provided with L-shaped limiting grooves on opposite sides, and the limiting grooves are slidably connected to the sliding rods.

[0012] Preferably, the number of clamping components is 3, and the central angle between adjacent clamping components is 120°.

[0013] Scanning probe microscope, including the sample fixation mold mentioned above.

[0014] Compared with the prior art, the above-mentioned technical solution of this utility model has the following beneficial technical effects:

[0015] In this invention, the clamping plate can easily clamp flat and thin film workpieces by rotating around the fixed base. When dealing with workpieces of other shapes, the clamping head can be quickly removed from the movable plate for replacement, making it convenient to clamp curved workpieces. When the movable plate moves in a straight line along the fixed plate, the clamping heads at one end of the multiple movable plates approach each other, enabling multi-point contact to restrict the movement of spherical workpieces, thus increasing the working scenarios that the clamping plate can adapt to. Attached Figure Description

[0016] Figure 1 This is a perspective view of the present utility model;

[0017] Figure 2 This is a cross-sectional view of the clamping plate;

[0018] Figure 3 This is a schematic diagram of the exploded structure of the clamping plate;

[0019] Figure 4 for Figure 3 Enlarged view of the structure at point A.

[0020] Reference numerals in the attached drawings: 1. Support panel; 2. Fixed base; 3. Clamping plate; 4. Fixed ratchet; 5. First elastic element; 6. Fixed plate; 7. Movable plate; 8. Clamping head; 9. Support plate; 10. Splicing plate; 11. Movable ratchet; 12. Second elastic element; 13. Sliding rod; 14. First plate; 15. Second plate; 16. Limiting groove. Detailed Implementation

[0021] Example 1

[0022] like Figures 1-4 As shown, the present invention proposes a sample fixing mold, including a support panel 1 and a clamping assembly. The upper surface of the support panel 1 is used to place the sample. Multiple clamping assemblies are distributed and connected to the support panel 1. Each clamping assembly includes a fixed base 2, a clamping plate 3, a fixed ratchet rack 4, a limiting assembly, and a first elastic element 5. The fixed base 2 is connected to the support panel 1, and the clamping plate 3 is rotatably connected to the fixed base 2. The clamping plate 3 consists of a fixed plate body 6, a movable plate body 7, and a clamping head 8. The fixed plate body 6 is rotatably connected to the fixed base 2. The fixed base 2 consists of two mounting seats and a support shaft. The mounting seats are connected to the support panel 1. On the support panel 1, both ends of the support shaft are connected to the mounting base, and the through holes in the clamping plate 3 are used to pass through the support shaft; both ends of the first elastic element 5 are connected to the fixed plate 6 and the support panel 1 respectively; the first elastic element 5 is a spring; one side of the movable plate 7 is connected to the fixed ratchet 4, the movable plate 7 and the fixed plate 6 are slidably connected, the limiting component is connected to the fixed plate 6, and the clamping head 8 is detachably connected to the movable plate 7; when the clamping component is in use, the clamping head 8 and the movable plate 7 and the fixed plate 6 move linearly, and the limiting component and the fixed ratchet 4 cooperate to limit the position of the movable plate 7 to adjust the overall length of the clamping plate 3.

[0023] In an optional embodiment, the fixed plate 6 is composed of a support plate 9 and a splicing plate 10. The support plate 9 and the splicing plate 10 are detachably connected. The support plate 9 and the splicing plate 10 have a receiving groove on their opposite sides to accommodate the movable plate 7. The side wall of the receiving groove has a notch.

[0024] Example 2

[0025] like Figures 1-2As shown, this utility model proposes a sample fixing mold and scanning probe microscope. Compared with Embodiment 1, this embodiment describes the detailed structure of the clamping assembly. The limiting assembly includes a movable ratchet 11 and a second elastic member 12. The movable ratchet 11 cooperates with the fixed ratchet 4. The movable ratchet 11 has a through hole, and a support shaft is connected in the through hole. The support shaft is connected to the support plate 9. The two ends of the second elastic member 12 are respectively connected to the movable ratchet 11 and the support plate 9. The second elastic member 12 is selected from, but is not limited to, a V-shaped spring sheet. The second elastic member 12 keeps the movable ratchet 11 in an inclined state so that it cooperates with the fixed ratchet 4 to restrict its retraction.

[0026] In an optional embodiment, sliding rods 13 are connected to both sides of the movable plate 7 away from the fixed plate 6.

[0027] In an optional embodiment, the movable plate 7 has a scale on the side away from the support panel 1; the scale facilitates observation of the adjustment position when the clamping head 8 moves, and facilitates adjustment of the overall length of the clamping plate 3 to limit the movement of the spherical object when clamping it.

[0028] In an optional embodiment, the clamping head 8 is composed of a first plate 14 and a second plate 15. The first plate 14 is connected to a plurality of mating rods, which mate with blind holes opened on the second plate 15. The first plate 14 and the second plate 15 are each provided with an L-shaped limiting groove 16 on opposite sides. The limiting groove 16 is slidably connected to the sliding rod 13. The L-shaped limiting groove 16 and the sliding rod 13 form a structure that is easy to disassemble, which can quickly replace the clamping head 8 inside the housing. The clamping head 8 can be changed according to the different objects being clamped to achieve the required clamping or limiting effect.

[0029] In an optional embodiment, the number of clamping components is three, and the central angle between adjacent clamping components is 120°; the triangular distribution structure enables the clamping components to be subjected to more uniform force when clamping an object, and to be more stable when limiting spherical or curved objects.

[0030] Example 3

[0031] like Figures 1-4 As shown, the scanning probe microscope proposed in this utility model includes the sample fixing mold as described in Example 1 or Example 2.

[0032] In summary, when using this utility model, the operator places the workpiece on the support panel 1. If it is a flat panel, one end of the clamping plate 3 is pressed to compress the first elastic element 5. After the first elastic element 5 is compressed, it rotates around the fixed seat 2. The clamping head 8 at one end of the clamping plate 3 clamps and fixes the workpiece through contact with it. Then, the support panel 1 is placed on the sample stage of the scanning probe microscope for testing. If it is necessary to clamp a sphere, the clamping head 8 is moved to move along an L-shaped path, so that the clamping head 8 is disengaged from the sliding rod 13. The plate-shaped clamping head 8 can be replaced with other shapes of clamping heads 8, and then installed through the cooperation of the sliding rod 13. After installation, the movable plate 7 is pulled to move it from the fixed plate 6, which drives the other shapes of clamping heads 8 to approach the spherical workpiece. The clamping head 8 moves along the diameter of the sphere, forming a constraint through three or more points of contact.

[0033] The embodiments of the present invention have been described in detail above with reference to the accompanying drawings. However, the present invention is not limited thereto. Various changes can be made within the scope of knowledge possessed by those skilled in the art without departing from the spirit of the present invention.

Claims

1. A sample fixing mold, characterized in that, include Support panel (1), the upper surface of which is used to place the sample; The clamping assembly comprises multiple components connected to the support panel (1). Each clamping assembly includes a fixed base (2), a clamping plate (3), a fixed ratchet rack (4), a limiting component, and a first elastic element (5). The fixed base (2) is connected to the support panel (1), and the clamping plate (3) is rotatably connected to the fixed base (2). The clamping plate (3) consists of a fixed plate body (6), a movable plate body (7), and a clamping head (8). The fixed plate body (6) is rotatably connected to the fixed base (2), and the two ends of the first elastic element (5) are respectively connected to… The fixed plate (6) is connected to the support panel (1), and the movable plate (7) is connected to a fixed ratchet (4) on one side. The movable plate (7) is slidably connected to the fixed plate (6). The limiting component is connected to the fixed plate (6), and the clamping head (8) is detachably connected to the movable plate (7). When the clamping component is in use, the clamping head (8) and the movable plate (7) move linearly to the fixed plate (6). The limiting component and the fixed ratchet (4) cooperate to limit the position of the movable plate (7) to adjust the overall length of the clamping plate (3).

2. The sample fixing mold according to claim 1, characterized in that, The fixed plate (6) is composed of a support plate (9) and a splicing plate (10). The support plate (9) and the splicing plate (10) are detachably connected. The support plate (9) and the splicing plate (10) have a receiving groove on one side facing each other to accommodate the movable plate (7). The side wall of the receiving groove has a notch.

3. The sample fixing mold according to claim 2, characterized in that, The limiting component includes a movable ratchet (11), which cooperates with a fixed ratchet (4). The movable ratchet (11) has a through hole, and a support shaft is connected inside the through hole. The support shaft is connected to the support plate (9). The second elastic element (12) is connected at both ends to the movable ratchet (11) and the support plate (9), respectively.

4. A sample fixing mold according to claim 1, characterized in that, The movable plate (7) is connected to sliding rods (13) on both sides of the end away from the fixed plate (6).

5. A sample fixing mold according to claim 1, characterized in that, The movable plate (7) has a scale on the side away from the supporting panel (1).

6. A sample fixing mold according to claim 5, characterized in that, The clamping head (8) is composed of a first plate (14) and a second plate (15). Multiple mating rods are connected to the first plate (14). The mating rods are mated with blind holes opened on the second plate (15). L-shaped limiting grooves (16) are opened on the opposite side of the first plate (14) and the second plate (15). The limiting grooves (16) are slidably connected to the sliding rod (13).

7. A sample fixing mold according to claim 1, characterized in that, The number of clamping components is 3, and the central angle between adjacent clamping components is 120°.

8. A scanning probe microscope, characterized in that, The sample fixing mold includes any one of claims 1-7.

Images