A high-precision diamond anvil cell pressure dynamic regulation device

Abstract

The application relates to a high-precision diamond anvil cell pressure dynamic regulation device, and relates to a diamond anvil cell pressure regulation device.The application aims to solve the technical problem that the current diamond anvil cell is unevenly loaded when being pressurized, leading to asymmetric stress distribution on the upper and lower diamond anvil surfaces.The high-precision diamond anvil cell pressure dynamic regulation device is an axisymmetric structure, and specifically comprises an inner hexagonal wrench, a sleeve box, a first gear, an inner hexagonal sleeve and a gear.The application applies forces in opposite directions to the two inner hexagonal wrenches, and through the meshing of the four gears in the middle, the two inner hexagonal wrenches are simultaneously and oppositely rotated by different angles, so that the same pressure is applied to the diamond anvil cell, the screws are accurately controlled to rotate into the same distance, uniform force is applied to the diamond anvil cell, and the pressure size and distribution uniformity of the diamond anvil cell are accurately controlled.

Description

Technical Field

[0001] This invention relates to a pressure regulating device for a diamond anvil cell. Background Technology

[0002] Diamond anvil cells (DACs), as core instruments in high-pressure science research, generate extreme hydrostatic pressure (currently achievable in laboratory conditions at 300-500 GPa, equivalent to several times the pressure of the Earth's core) through a tiny contact area (typically only tens to hundreds of micrometers in diameter) between two diamond anvils. They have become an irreplaceable tool for exploring the behavior of matter under ultra-high pressure conditions. Their applications span condensed matter physics (such as the study of high-temperature superconductivity mechanisms), earth science (simulation of mantle mineral phase transitions), materials chemistry (synthesis of novel superhard materials), and even astrophysics (analysis of the internal state of matter on giant planets).

[0003] However, existing DAC devices suffer from significant pressure control precision issues in practical applications. Current mainstream pressurization systems rely on four symmetrically distributed precision threaded rods (mostly made of hardened stainless steel or tungsten carbide alloy). Two wrenches are used to manually and alternately screw in the pressure screws located diagonally. During operation, due to the lack of real-time pressure feedback and synchronous control mechanisms, the difference in screw depth between different screws can reach 5-10 μm. This non-uniform loading leads to asymmetrical stress distribution on the upper and lower diamond anvil faces (local stress concentration factors can reach 1.3-1.8). There is an urgent need for a compact, easy-to-operate diamond anvil device capable of high-precision dynamic pressure control to overcome the bottleneck of pressure control in high-pressure experiments and meet the pressing needs of cutting-edge scientific research for precise control under extreme conditions. Summary of the Invention

[0004] The present invention aims to solve the technical problem that the non-uniform loading of diamond anvils during pressurization leads to asymmetrical stress distribution on the upper and lower diamond anvil surfaces, and provides a device for dynamic control of diamond anvil pressure with high precision.

[0005] The high-precision diamond anvil pressure dynamic control device of the present invention has an axisymmetric structure, specifically composed of a first hexagonal wrench, a second hexagonal wrench, a socket 3, a first gear 4, a first hexagonal socket, a second hexagonal socket, a first gear hub 8, a second gear hub 9, a second gear 13, a third gear 14, and a fourth gear 15.

[0006] The first and second Allen wrenches described above have the same structure and dimensions.

[0007] The first internal hex wrench is composed of a first thin rod 1 and a second thin rod 12 perpendicularly. The second thin rod 12 passes through the central axis of the second gear 13, and the second thin rod 12 and the second gear 13 are relatively fixed. The second thin rod 12 has a regular hexagonal prism structure.

[0008] The second internal hex wrench is composed of a third thin rod 2 and a fourth thin rod 5 perpendicularly. The fourth thin rod 5 passes through the central axis of the first gear 4, and the fourth thin rod 5 and the first gear 4 are relatively fixed. The fourth thin rod 5 has a regular hexagonal prism structure.

[0009] The inner cavity of the sleeve box 3 is a hollow structure. Inside the inner cavity, a second gear 13, a third gear 14, a fourth gear 15, and a first gear 4 are arranged sequentially according to their placement positions. The four gears have identical structures and dimensions, and they mesh with adjacent gears. A first gear hub 8 is fixed to the central axis of the third gear 14, and a second gear hub 9 is fixed to the central axis of the fourth gear 15. The first gear hub 8 and the second gear hub 9 are vertically positioned within the inner cavity of the sleeve box 3 and are in close contact with the top and bottom surfaces of the sleeve box 3. Both the first gear hub 8 and the second gear hub 9 are slidably connected to the top and bottom surfaces of the sleeve box 3. A second thin rod 12 and a fourth thin rod 5 both pass through the top and bottom surfaces of the sleeve box 3, and are slidably connected to the top and bottom surfaces of the sleeve box 3.

[0010] The first and second internal hexagonal sleeves have the same structure and dimensions.

[0011] The first internal hexagonal sleeve is composed of a first sleeve 11 and a first regular hexagonal prism 10. One end of the first sleeve 11 is fixed relative to the first regular hexagonal prism 10, and the other end of the first sleeve 11 is fitted onto the lower free end of the second thin rod 12. The inner cavity of the first sleeve 11 matches the structure of the lower free end of the second thin rod 12.

[0012] The second internal hexagonal sleeve is composed of a second sleeve 6 and a second regular hexagonal prism 7. One end of the second sleeve 6 is fixed relative to the second regular hexagonal prism 7, and the other end of the second sleeve 6 is sleeved on the lower free end of the fourth thin rod 5. The inner cavity of the second sleeve 6 matches the structure of the lower free end of the fourth thin rod 5.

[0013] The internal hexagonal socket in this invention is an existing commercial product.

[0014] The method and working principle of the high-precision diamond anvil pressure dynamic control device of the present invention are as follows: Four evenly distributed screws are set on the upper surface of the diamond anvil 18, namely the first hexagon socket screw 16, the second hexagon socket screw 17, the third hexagon socket screw 19 and the fourth hexagon socket screw 20 (this is the prior art). When applying pressure to the diamond anvil 18, the regular hexagons at the top of the four screws are first adjusted to the same rotation angle to ensure the consistency of the initial state; the corresponding matching hexagon socket sleeve is selected according to the size of the screw. Then, align the two opposing screws, such as the third hexagon socket screw 19 and the fourth hexagon socket screw 20, with the first regular hexagonal prism 10 and the second regular hexagonal prism 7 respectively, in preparation for applying initial pressure (the device should be customized according to the distance between the two opposing screws before the experiment so that the distance between the first regular hexagonal prism 10 and the second regular hexagonal prism 7 matches exactly); next, simultaneously rotate the first thin rod 1 and the third thin rod 2 in opposite directions (one clockwise and the other counterclockwise) by the same angle. During this process, the second gear 13 and the third gear 1... 4. The first gear 4 and the fourth gear 15 mesh with each other and rotate in opposite directions. The third gear 14 and the fourth gear 15 also mesh with each other, rotating in opposite directions at the same angle. This design ensures that the first thin rod 1 and the third thin rod 2 can rotate simultaneously in opposite directions by the same angle, thereby precisely controlling the third hexagon socket screw 19 and the fourth hexagon socket screw 20 to be screwed in by the same distance. This applies a uniform force to the diamond anvil 18, achieving precise control over the pressure magnitude and distribution uniformity of the diamond anvil 18. The high-precision diamond anvil pressure dynamic control device is then removed from the third hexagon socket screw 19 and the fourth hexagon socket screw 20. The same method is then used to screw in the other two symmetrically positioned first hexagon socket screws 16 and second hexagon socket screws 17 by the same distance. Throughout the pressurization process, opposing forces are applied through the first thin rod 1 and the third thin rod 2, and the gears connected to them mesh with each other, allowing the two screws corresponding to the two hexagonal sockets to be screwed in by the same distance. This not only allows for the application of greater pressure with the same force, resulting in a labor-saving effect, but also enables high-precision control of the pressure magnitude, achieving high-pressure resolution measurements of spectra, electrical, and magnetic fields. Simultaneously, a uniform force is applied to the diamond anvil 18, thereby achieving the effect of applying isotropic hydrostatic pressure to the material.

[0015] Furthermore, if a different size screw is replaced, a matching hex socket can be used (primarily the lower first regular hexagonal prism 10 matches the screw), which is compatible with different models of diamond anvil cells 18. Although the size of the lower first regular hexagonal prism 10 changes after replacing the hex socket, the internal cavity size above the first socket 11 remains unchanged, so the previous hex wrench can still be used without replacing it.

[0016] It should be noted that there is friction between the gear hub and the inner wall of the housing 3, so proper lubrication is necessary, and lubricating oil should be applied promptly. At the same time, the gears themselves also need to be lubricated with lubricant, and the housing 3 should be properly sealed to prevent lubricant leakage, thus ensuring smooth operation and long-term stability of the device.

[0017] In this invention, two hexagonal wrenches are applied in opposite directions, and the four gears in the middle are meshed with each other to rotate them in opposite directions at different angles, thereby applying the same pressure to the diamond anvil 18; a hexagonal socket is provided at the lower end. For different models of diamond anvils, the size of their hexagonal screws is different, but the center distance of the screws is the same, so different hexagonal sockets can be used.

[0018] The present invention has the following advantages:

[0019] 1. The device of the present invention can generate greater pressure with the same force, thus having a labor-saving effect;

[0020] 2. The device of the present invention can control the pressure with high precision and realize high-pressure resolution spectral, electrical, magnetic and other measurements;

[0021] 3. The device of the present invention can apply uniform pressure, thereby achieving the effect of applying isotropic hydrostatic pressure to the material;

[0022] 4. The device of the present invention has strong adaptability and can be adapted to different types of diamond anvil cells. Attached Figure Description

[0023] Figure 1 This is a top view of the device for dynamically controlling the pressure of a diamond anvil cell in Specific Implementation Method 1 (the top of the housing 3 is assumed to be transparent in this figure to facilitate understanding of its internal structure).

[0024] Figure 2 This is a schematic diagram illustrating the high-precision diamond anvil pressure dynamic control device in use during the implementation of Specific Implementation Method 1.

[0025] Figure 3 This is a front view schematic diagram of the device for dynamic control of high-precision diamond anvil pressure in Specific Implementation Method 1. Detailed Implementation

[0026] Specific Implementation Method 1: This implementation method is a device for achieving high-precision dynamic control of diamond anvil pressure, such as... Figures 1-3 As shown, it has an axisymmetric structure, specifically composed of a first hex wrench, a second hex wrench, a socket 3, a first gear 4, a first hex socket, a second hex socket, a first gear hub 8, a second gear hub 9, a second gear 13, a third gear 14, and a fourth gear 15;

[0027] The first and second Allen wrenches described above have the same structure and dimensions.

[0028] The first internal hex wrench is composed of a first thin rod 1 and a second thin rod 12 perpendicularly. The second thin rod 12 passes through the central axis of the second gear 13, and the second thin rod 12 and the second gear 13 are relatively fixed. The second thin rod 12 has a regular hexagonal prism structure.

[0029] The second internal hex wrench is composed of a third thin rod 2 and a fourth thin rod 5 perpendicularly. The fourth thin rod 5 passes through the central axis of the first gear 4, and the fourth thin rod 5 and the first gear 4 are relatively fixed. The fourth thin rod 5 has a regular hexagonal prism structure.

[0030] The inner cavity of the sleeve box 3 is a hollow structure. Inside the inner cavity, a second gear 13, a third gear 14, a fourth gear 15, and a first gear 4 are arranged sequentially according to their placement positions. The four gears have identical structures and dimensions, and they mesh with adjacent gears. A first gear hub 8 is fixed to the central axis of the third gear 14, and a second gear hub 9 is fixed to the central axis of the fourth gear 15. The first gear hub 8 and the second gear hub 9 are vertically positioned within the inner cavity of the sleeve box 3 and are in close contact with the top and bottom surfaces of the sleeve box 3. Both the first gear hub 8 and the second gear hub 9 are slidably connected to the top and bottom surfaces of the sleeve box 3. A second thin rod 12 and a fourth thin rod 5 both pass through the top and bottom surfaces of the sleeve box 3, and are slidably connected to the top and bottom surfaces of the sleeve box 3.

[0031] The first and second internal hexagonal sleeves have the same structure and dimensions.

[0032] The first internal hexagonal sleeve is composed of a first sleeve 11 and a first regular hexagonal prism 10. One end of the first sleeve 11 is fixed relative to the first regular hexagonal prism 10, and the other end of the first sleeve 11 is fitted onto the lower free end of the second thin rod 12. The inner cavity of the first sleeve 11 matches the structure of the lower free end of the second thin rod 12.

[0033] The second internal hexagonal sleeve is composed of a second sleeve 6 and a second regular hexagonal prism 7. One end of the second sleeve 6 is fixed relative to the second regular hexagonal prism 7, and the other end of the second sleeve 6 is sleeved on the lower free end of the fourth thin rod 5. The inner cavity of the second sleeve 6 matches the structure of the lower free end of the fourth thin rod 5.

[0034] The method and working principle of the high-precision diamond anvil pressure dynamic control device in this embodiment are as follows: Four evenly distributed screws are set on the upper surface of the diamond anvil 18, namely the first hexagon socket screw 16, the second hexagon socket screw 17, the third hexagon socket screw 19 and the fourth hexagon socket screw 20 (this is the prior art). When applying pressure to the diamond anvil 18, the regular hexagons at the top of the four screws are first adjusted to the same rotation angle to ensure the consistency of the initial state; the corresponding matching hexagon socket sleeve is selected according to the size of the screw. Then, align the two opposing screws, such as the third hexagon socket screw 19 and the fourth hexagon socket screw 20, with the first regular hexagonal prism 10 and the second regular hexagonal prism 7 respectively, in preparation for applying initial pressure (the device should be customized according to the distance between the two opposing screws before the experiment so that the distance between the first regular hexagonal prism 10 and the second regular hexagonal prism 7 matches exactly); next, simultaneously rotate the first thin rod 1 and the third thin rod 2 in opposite directions (one clockwise and the other counterclockwise) by the same angle. During this process, the second gear 13 and the third gear 1... 4. The first gear 4 and the fourth gear 15 mesh with each other and rotate in opposite directions. The third gear 14 and the fourth gear 15 also mesh with each other, rotating in opposite directions at the same angle. This design ensures that the first thin rod 1 and the third thin rod 2 can rotate simultaneously in opposite directions by the same angle, thereby precisely controlling the third hexagon socket screw 19 and the fourth hexagon socket screw 20 to be screwed in by the same distance. This applies a uniform force to the diamond anvil 18, achieving precise control over the pressure magnitude and distribution uniformity of the diamond anvil 18. The high-precision diamond anvil pressure dynamic control device is then removed from the third hexagon socket screw 19 and the fourth hexagon socket screw 20. The same method is then used to screw in the other two symmetrically positioned first hexagon socket screws 16 and second hexagon socket screws 17 by the same distance. Throughout the pressurization process, opposing forces are applied through the first thin rod 1 and the third thin rod 2, and the gears connected to them mesh with each other, allowing the two screws corresponding to the two hexagonal sockets to be screwed in by the same distance. This not only allows for the application of greater pressure with the same force, resulting in a labor-saving effect, but also enables high-precision control of the pressure magnitude, achieving high-pressure resolution measurements of spectra, electrical, and magnetic fields. Simultaneously, a uniform force is applied to the diamond anvil 18, thereby achieving the effect of applying isotropic hydrostatic pressure to the material.

[0035] Furthermore, if a different size screw is replaced, a matching hex socket can be used (primarily the lower first regular hexagonal prism 10 matches the screw), which is compatible with different models of diamond anvil cells 18. Although the size of the lower first regular hexagonal prism 10 changes after replacing the hex socket, the internal cavity size above the first socket 11 remains unchanged, so the previous hex wrench can still be used without replacing it.

[0036] It should be noted that there is friction between the gear hub and the inner wall of the housing 3, so proper lubrication is necessary, and lubricating oil should be applied promptly. At the same time, the gears themselves also need to be lubricated with lubricant, and the housing 3 should be properly sealed to prevent lubricant leakage, thus ensuring smooth operation and long-term stability of the device.

[0037] In this embodiment, two hex wrenches are applied in opposite directions, and the four gears in the middle are meshed with each other to rotate them in opposite directions at different angles, thereby applying the same pressure to the diamond anvil 18; a hex socket is provided at the lower end. For different models of diamond anvils, the size of their hex screws is different, but the center distance of the screws is the same, so different hex sockets can be used.

[0038] This implementation method has the following advantages:

[0039] 1. The device of this embodiment can generate greater pressure with the same force, thus saving effort;

[0040] 2. The device of this embodiment can control the pressure with high precision and realize high-pressure resolution spectral, electrical, magnetic and other measurements;

[0041] 3. The device of this embodiment can apply uniform pressure, thereby achieving the effect of applying isotropic hydrostatic pressure to the material;

[0042] 4. The device in this embodiment is highly adaptable and can be used with different types of diamond anvil cells.

[0043] Specific Implementation Method Two: This implementation method differs from Specific Implementation Method One in that the length of the first thin rod 1 is 10cm to 13cm. Everything else is the same as in Specific Implementation Method One.

[0044] Specific Implementation Method Three: This implementation method differs from Specific Implementation Method One or Two in that the first sleeve 11 is made of stainless steel. Everything else is the same as in Specific Implementation Method One or Two.

[0045] Specific Implementation Method Four: This implementation method differs from Specific Implementation Methods One to Three in that the first thin rod 1 and the second thin rod 12 are integral structures. Everything else is the same as in Specific Implementation Methods One to Three.

[0046] Specific Implementation Method Five: This implementation method differs from Specific Implementation Method Four in that the third gear 14 and the first gear hub 8 are an integral structure. Everything else is the same as in Specific Implementation Method Four.

[0047] Specific Implementation Method Six: This implementation method differs from Specific Implementation Method Five in that the fourth gear 15 and the second gear hub 9 are an integral structure. Everything else is the same as in Specific Implementation Method Five.

[0048] Specific Implementation Method Seven: This implementation method differs from Specific Implementation Method Six in that the box 3 described herein has a rectangular parallelepiped structure. Everything else is the same as in Specific Implementation Method Six.

[0049] Specific Implementation Method Eight: This implementation method differs from Specific Implementation Method Seven in that the second thin rod 12 and the second gear 13 are an integral structure. Everything else is the same as in Specific Implementation Method Seven.

[0050] Specific Implementation Method Nine: This implementation method differs from Specific Implementation Method Eight in that the fourth thin rod 5 and the first gear 4 are an integral structure. Everything else is the same as in Specific Implementation Method Eight.

[0051] Specific Implementation Method Ten: This implementation method differs from Specific Implementation Method Nine in that the length of the third thin rod 2 is 10cm to 13cm. Everything else is the same as in Specific Implementation Method Nine.

[0052] The invention was verified using the following experiments:

[0053] Experiment 1: This experiment demonstrates a device for achieving high-precision dynamic control of diamond anvil pressure, such as... Figures 1-3 As shown, it has an axisymmetric structure, specifically composed of a first hex wrench, a second hex wrench, a socket 3, a first gear 4, a first hex socket, a second hex socket, a first gear hub 8, a second gear hub 9, a second gear 13, a third gear 14, and a fourth gear 15;

[0054] The first and second Allen wrenches described above have the same structure and dimensions.

[0055] The first internal hex wrench is composed of a first thin rod 1 and a second thin rod 12 perpendicularly. The second thin rod 12 passes through the central axis of the second gear 13, and the second thin rod 12 and the second gear 13 are relatively fixed. The second thin rod 12 has a regular hexagonal prism structure.

[0056] The second internal hex wrench is composed of a third thin rod 2 and a fourth thin rod 5 perpendicularly. The fourth thin rod 5 passes through the central axis of the first gear 4, and the fourth thin rod 5 and the first gear 4 are relatively fixed. The fourth thin rod 5 has a regular hexagonal prism structure.

[0057] The inner cavity of the sleeve box 3 is a hollow structure. Inside the inner cavity, a second gear 13, a third gear 14, a fourth gear 15, and a first gear 4 are arranged sequentially according to their placement positions. The four gears have identical structures and dimensions, and they mesh with adjacent gears. A first gear hub 8 is fixed to the central axis of the third gear 14, and a second gear hub 9 is fixed to the central axis of the fourth gear 15. The first gear hub 8 and the second gear hub 9 are vertically positioned within the inner cavity of the sleeve box 3 and are in close contact with the top and bottom surfaces of the sleeve box 3. Both the first gear hub 8 and the second gear hub 9 are slidably connected to the top and bottom surfaces of the sleeve box 3. A second thin rod 12 and a fourth thin rod 5 both pass through the top and bottom surfaces of the sleeve box 3, and are slidably connected to the top and bottom surfaces of the sleeve box 3.

[0058] The first and second internal hexagonal sleeves have the same structure and dimensions.

[0059] The first internal hexagonal sleeve is composed of a first sleeve 11 and a first regular hexagonal prism 10. One end of the first sleeve 11 is fixed relative to the first regular hexagonal prism 10, and the other end of the first sleeve 11 is fitted onto the lower free end of the second thin rod 12. The inner cavity of the first sleeve 11 matches the structure of the lower free end of the second thin rod 12.

[0060] The second internal hexagonal sleeve is composed of a second sleeve 6 and a second regular hexagonal prism 7. One end of the second sleeve 6 is fixed relative to the second regular hexagonal prism 7, and the other end of the second sleeve 6 is sleeved on the lower free end of the fourth thin rod 5. The inner cavity of the second sleeve 6 matches the structure of the lower free end of the fourth thin rod 5.

[0061] The method and working principle of the high-precision diamond anvil pressure dynamic control device in this experiment are as follows: Four evenly distributed screws are set on the upper surface of the diamond anvil 18, namely the first hexagon socket screw 16, the second hexagon socket screw 17, the third hexagon socket screw 19 and the fourth hexagon socket screw 20 (this is the prior art). When applying pressure to the diamond anvil 18, the regular hexagons at the top of the four screws are first adjusted to the same rotation angle to ensure the consistency of the initial state; the corresponding matching hexagon socket sleeve is selected according to the size of the screw. Then, align the two opposing screws, such as the third hexagon socket screw 19 and the fourth hexagon socket screw 20, with the first regular hexagonal prism 10 and the second regular hexagonal prism 7 respectively, in preparation for applying initial pressure (the device should be customized according to the distance between the two opposing screws before the experiment so that the distance between the first regular hexagonal prism 10 and the second regular hexagonal prism 7 matches exactly); next, simultaneously rotate the first thin rod 1 and the third thin rod 2 in opposite directions (one clockwise and the other counterclockwise) by the same angle. During this process, the second gear 13 and the third gear 1... 4. The first gear 4 and the fourth gear 15 mesh with each other and rotate in opposite directions. The third gear 14 and the fourth gear 15 also mesh with each other, rotating in opposite directions at the same angle. This design ensures that the first thin rod 1 and the third thin rod 2 can rotate simultaneously in opposite directions by the same angle, thereby precisely controlling the third hexagon socket screw 19 and the fourth hexagon socket screw 20 to be screwed in by the same distance. This applies a uniform force to the diamond anvil 18, achieving precise control over the pressure magnitude and distribution uniformity of the diamond anvil 18. The high-precision diamond anvil pressure dynamic control device is then removed from the third hexagon socket screw 19 and the fourth hexagon socket screw 20. The same method is then used to screw in the other two symmetrically positioned first hexagon socket screws 16 and second hexagon socket screws 17 by the same distance. Throughout the pressurization process, opposing forces are applied through the first thin rod 1 and the third thin rod 2, and the gears connected to them mesh with each other, allowing the two screws corresponding to the two hexagonal sockets to be screwed in by the same distance. This not only allows for the application of greater pressure with the same force, resulting in a labor-saving effect, but also enables high-precision control of the pressure magnitude, achieving high-pressure resolution measurements of spectra, electrical, and magnetic fields. Simultaneously, a uniform force is applied to the diamond anvil 18, thereby achieving the effect of applying isotropic hydrostatic pressure to the material.

[0062] Furthermore, if a different size screw is replaced, a matching hex socket can be used (primarily the lower first regular hexagonal prism 10 matches the screw), which is compatible with different models of diamond anvil cells 18. Although the size of the lower first regular hexagonal prism 10 changes after replacing the hex socket, the internal cavity size above the first socket 11 remains unchanged, so the previous hex wrench can still be used without replacing it.

[0063] It should be noted that there is friction between the gear hub and the inner wall of the housing 3, so proper lubrication is necessary, and lubricating oil should be applied promptly. At the same time, the gears themselves also need to be lubricated with lubricant, and the housing 3 should be properly sealed to prevent lubricant leakage, thus ensuring smooth operation and long-term stability of the device.

[0064] In this experiment, two hex wrenches are applied in opposite directions, and the four gears in the middle are meshed together to make them rotate in opposite directions at different angles, thereby applying the same pressure to the diamond anvil 18. A hex socket is provided at the lower end. For different models of diamond anvils, the size of their hex screws is different, but the center distance of the screws is the same. Therefore, different hex sockets can be used.

[0065] This experiment has the following advantages:

[0066] 1. The apparatus used in this experiment can generate greater pressure with the same force, thus saving effort;

[0067] 2. The apparatus used in this experiment can control the pressure with high precision, enabling high-pressure resolution measurements of spectra, electrical, and magnetic fields.

[0068] 3. The apparatus used in this experiment can apply uniform pressure, thereby achieving the effect of applying isotropic hydrostatic pressure to the material;

[0069] 4. The apparatus used in this experiment is highly adaptable and can be used with different types of diamond anvil cells.

Claims

1. A device for achieving high-precision dynamic control of diamond anvil pressure, characterized in that... The high-precision diamond anvil pressure dynamic control device has an axisymmetric structure, specifically consisting of a first internal hex wrench, a second internal hex wrench, a socket (3), a first gear (4), a first internal hex socket, a second internal hex socket, a first gear hub (8), a second gear hub (9), a second gear (13), a third gear (14), and a fourth gear (15). The first and second Allen wrenches described above have the same structure and dimensions. The first internal hex wrench is composed of a first thin rod (1) and a second thin rod (12) arranged perpendicularly. The second thin rod (12) passes through the central axis of the second gear (13), and the second thin rod (12) and the second gear (13) are in a relatively fixed relationship. The second thin rod (12) is a regular hexagonal prism structure. The second internal hex wrench is composed of a third thin rod (2) and a fourth thin rod (5) arranged vertically. The fourth thin rod (5) passes through the central axis of the first gear (4), and the fourth thin rod (5) and the first gear (4) are in a relatively fixed relationship. The fourth thin rod (5) is a regular hexagonal prism structure. The inner cavity of the sleeve (3) is a hollow structure. The second gear (13), the third gear (14), the fourth gear (15) and the first gear (4) are arranged in the inner cavity according to their placement positions. The four gears have the same structure and size, and the four gears mesh with the adjacent gears. The first gear hub (8) is fixed on the central axis of the third gear (14), and the second gear hub (9) is fixed on the central axis of the fourth gear (15). The first gear hub (8) and the second gear hub (9) are vertically arranged in the inner cavity of the sleeve (3) and are in close contact with the top and bottom surfaces of the sleeve (3). The first gear hub (8) and the second gear hub (9) are slidably connected to the top and bottom surfaces of the sleeve (3). The second thin rod (12) and the fourth thin rod (5) both pass through the top and bottom surfaces of the sleeve (3). The second thin rod (12) and the fourth thin rod (5) are slidably connected to the top and bottom surfaces of the sleeve (3). The first and second internal hexagonal sleeves have the same structure and dimensions. The first internal hexagonal sleeve is composed of a first sleeve (11) and a first regular hexagonal prism (10). One end of the first sleeve (11) is fixed relative to the first regular hexagonal prism (10), and the other end of the first sleeve (11) is fitted onto the lower free end of the second thin rod (12). The inner cavity of the first sleeve (11) matches the structure of the lower free end of the second thin rod (12). The second internal hexagonal sleeve is composed of a second sleeve (6) and a second regular hexagonal prism (7). One end of the second sleeve (6) is fixed relative to the second regular hexagonal prism (7), and the other end of the second sleeve (6) is sleeved on the lower free end of the fourth thin rod (5). The inner cavity of the second sleeve (6) matches the structure of the lower free end of the fourth thin rod (5).

2. The device for dynamic control of high-precision diamond anvil pressure according to claim 1, characterized in that... The length of the first thin rod (1) is 10cm to 13cm.

3. The device for achieving high-precision dynamic control of diamond anvil pressure according to claim 1, characterized in that... The first sleeve (11) is made of stainless steel.

4. The device for dynamic control of high-precision diamond anvil pressure according to claim 1, characterized in that... The first thin rod (1) and the second thin rod (12) are an integral structure.

5. The device for dynamic control of high-precision diamond anvil pressure according to claim 1, characterized in that... The third gear (14) and the first gear hub (8) are an integral structure.

6. The device for dynamic control of high-precision diamond anvil pressure according to claim 1, characterized in that... The fourth gear (15) and the second gear hub (9) are an integral structure.

7. The device for dynamic control of high-precision diamond anvil pressure according to claim 1, characterized in that... The aforementioned box (3) has a cuboid structure.

8. The device for dynamic control of high-precision diamond anvil pressure according to claim 1, characterized in that... The second thin rod (12) and the second gear (13) are an integral structure.

9. The device for dynamic control of high-precision diamond anvil pressure according to claim 1, characterized in that... The fourth thin rod (5) and the first gear (4) are an integral structure.

10. The device for dynamic control of high-precision diamond anvil pressure according to claim 1, characterized in that... The length of the third thin rod (2) is 10cm to 13cm.

Images