An edge-compressed buckling structure super-slip device and a preparation method thereof

Abstract

The application discloses a kind of structural superlubricity devices of edge compression buckling, it is related to structural superlubricity technical field, including superlubricity sheet, the edge of two-dimensional material in the superlubricity sheet buckles to the direction of superlubricity surface, and the contact surface area of superlubricity surface is horizontal plane.The structural superlubricity device in the application includes superlubricity sheet, and the edge of two-dimensional material of superlubricity sheet buckles to the direction of superlubricity surface, i.e.the edge part is lifted to a certain height, to avoid the contact between the edge of two-dimensional material of superlubricity sheet and substrate, greatly reduce the friction between superlubricity sheet and substrate, avoid producing abrasion.Meanwhile, the contact area of superlubricity surface of superlubricity sheet is horizontal plane, so that the contact between superlubricity sheet and substrate is surface contact, rather than point contact, to avoid stress concentration, can stably bear higher load, while facilitating the movement of superlubricity sheet by electric signal control.The application also provides a kind of preparation method with the above advantages.

Description

TECHNICAL FIELD

[0001] The application relates to the technical field of super-slip, in particular to a structure super-slip device with edge compression buckling and a preparation method thereof. BACKGROUND

[0002] Structural super-slip refers to the phenomenon that the friction and wear between two atomically smooth and non-commensurate van der Waals solid surfaces (such as graphene, molybdenum disulfide and other two-dimensional material surfaces) are almost zero. At present, the super-slip sheet in the structure super-slip device is mostly in the form of a sheet or an island. When the super-slip sheet and the substrate are in contact and relative movement, the edge of the lower surface of the van der Waals material of the super-slip sheet and the substrate will generate chemical bond interaction. Compared with the complete lattice in the plane of the van der Waals material, the edge part generates more significant friction and increases the risk of wear of the super-slip device.

[0003] Therefore, how to reduce the friction and wear between the edge of the two-dimensional material in the super-slip sheet and the substrate is a technical problem to be solved by those skilled in the art. SUMMARY

[0004] The purpose of the application is to provide a structure super-slip device with edge compression buckling and a preparation method thereof, so as to reduce the friction between the edge of the super-slip sheet and the substrate, avoid stress concentration when in contact with the substrate, and improve the load bearing capacity.

[0005] To solve the above technical problems, the application provides a structure super-slip device with edge compression buckling, which comprises:

[0006] The edge of the two-dimensional material in the super-slip sheet is buckled in the direction away from the super-slip surface, and the contact surface area of the super-slip surface is a horizontal plane.

[0007] Optionally, the single-side edge of the two-dimensional material in the super-slip sheet is buckled in the direction away from the super-slip surface.

[0008] Optionally, the multi-side edge of the two-dimensional material in the super-slip sheet is buckled in the direction away from the super-slip surface.

[0009] Optionally, the four-side edge of the two-dimensional material in the super-slip sheet is buckled in the direction away from the super-slip surface.

[0010] Optionally, the application further comprises:

[0011] A rigid film layer is arranged on the preset surface of the super-slip sheet, the preset surface is opposite to the super-slip surface, and the projection of the rigid film layer on the super-slip surface is located in the contact surface area.

[0012] Optionally, the rigid film layer is arranged on the middle region of the preset surface of the super-slip sheet.

[0013] Optionally, the rigid film layer comprises a metal layer.

[0014] Optionally, the rigid film layer comprises a multilayer film.

[0015] Optionally, the super-slippery sheet comprises a multilayer two-dimensional material.

[0016] Optionally, further comprising:

[0017] a substrate in contact with the super-slippery surface of the super-slippery sheet.

[0018] The present application also provides a method for preparing a structurally super-slippery device with edge buckling under pressure, comprising:

[0019] obtaining a structurally super-slippery pre-processing device comprising a pre-prepared super-slippery sheet;

[0020] stamping the structurally super-slippery pre-processing device to make the edges of the two-dimensional material of the pre-prepared super-slippery sheet buckle in a direction away from the super-slippery surface and make the contact surface area of the super-slippery surface a horizontal plane, to obtain a structurally super-slippery device with edge buckling under pressure.

[0021] Optionally, stamping the structurally super-slippery pre-processing device to make the edges of the two-dimensional material of the pre-prepared super-slippery sheet buckle in a direction away from the super-slippery surface and make the contact surface area of the super-slippery surface a horizontal plane comprises:

[0022] placing the structurally super-slippery pre-processing device on a flexible substrate;

[0023] applying a normal load on the rigid film layer of the structurally super-slippery pre-processing device to make the structurally super-slippery pre-processing device sink into the flexible substrate, so that the area of the pre-prepared super-slippery sheet not covered by the rigid film layer produces plastic buckling, and the area covered by the rigid film layer remains horizontal.

[0024] Optionally, stamping the structurally super-slippery pre-processing device to make the edges of the two-dimensional material of the pre-prepared super-slippery sheet buckle in a direction away from the super-slippery surface and make the contact surface area of the super-slippery surface a horizontal plane comprises:

[0025] placing the structurally super-slippery pre-processing device on a groove of a hard substrate;

[0026] applying a normal load on the rigid film layer of the structurally super-slippery pre-processing device to make the structurally super-slippery pre-processing device sink into the groove, so that the area of the pre-prepared super-slippery sheet not covered by the rigid film layer produces plastic buckling, and the area covered by the rigid film layer remains horizontal.

[0027] A structurally super-slippery device with edge buckling under pressure provided by the present application comprises a super-slippery sheet, the edges of the two-dimensional material in the super-slippery sheet buckle in a direction away from the super-slippery surface, and the contact surface area of the super-slippery surface is a horizontal plane.

[0028] It can be seen that the structural super-slip device in the application includes a super-slip sheet, the edge of the super-slip sheet two-dimensional material is buckled in a direction away from the super-slip surface, that is, the edge part is lifted to a certain height, thereby avoiding the contact between the edge of the super-slip sheet two-dimensional material and the substrate, greatly reducing the friction between the super-slip sheet and the substrate, and avoiding wear. At the same time, the contact area of the super-slip surface of the super-slip sheet is a horizontal plane, so that the contact between the super-slip sheet and the substrate is surface contact rather than point contact, thereby avoiding stress concentration and stably bearing higher load, and facilitating the movement of the super-slip sheet controlled by an electric signal.

[0029] In addition, the application also provides a preparation method with the above advantages. BRIEF DESCRIPTION OF DRAWINGS

[0030] In order to more clearly illustrate the technical solutions of the embodiments of the application or the prior art, the following will briefly introduce the drawings needed to be used in the embodiment or prior art description. Obviously, the drawings in the following description are only some embodiments of the application, and for those skilled in the art, other drawings can also be obtained without creative labor based on these drawings.

[0031] Figure 1 It is a scanning diagram of the buckled form of the two-dimensional material;

[0032] Figure 2 It is a structural schematic diagram of a structural super-slip device with edge buckling under pressure provided by the embodiment of the application;

[0033] Figure 3 It is a structural schematic diagram of another structural super-slip device with edge buckling under pressure provided by the embodiment of the application;

[0034] Figure 4 It is a top view of a structural super-slip device with edge buckling under pressure provided by the embodiment of the application;

[0035] Figure 5 And Figure 6 It is a top view of a super-slip sheet with different shapes provided by the embodiment of the application;

[0036] Figure 7 It is a structural schematic diagram of another structural super-slip device with edge buckling under pressure provided by the embodiment of the application;

[0037] Figure 8 It is a flowchart of a preparation method of a structural super-slip device with edge buckling under pressure provided by the embodiment of the application;

[0038] Figures 9 to 15 It is a flowchart of a preparation process of a structural super-slip preprocessor provided by the embodiment of the application;

[0039] Figure 16 and Figure 17 A flowchart for stamping a structural superlubricity pretreatment device is provided in an embodiment of the present application;

[0040] Figure 18 and Figure 19 Another flowchart for stamping a structural superlubricity pretreatment device is provided in an embodiment of the present application;

[0041] In the figure, 1. superlubricity sheet, 2. rigid film layer, 3. substrate, 4. photoresist, 5. flexible substrate, 6. hard substrate. DETAILED DESCRIPTION

[0042] In order to enable persons skilled in the art to better understand the present application, the present application will be further described in detail below in combination with the drawings and specific embodiments. Obviously, the described embodiments are only part of the embodiments of the present application, rather than all the embodiments. Based on the embodiments in the present application, all other embodiments obtained by those skilled in the art without making creative efforts fall within the scope of protection of the present application.

[0043] In the following description, many specific details are set forth in order to provide a thorough understanding of the present application, but the present application can also be implemented in other ways different from those described herein, and those skilled in the art can make similar generalizations without departing from the concept of the present application, therefore the present application is not limited to the specific embodiments disclosed below.

[0044] As described in the background section, at present, when the superlubricity sheet in the structural superlubricity device moves relative to the substrate, there is an interface chemical bond between the edge of the lower surface of the superlubricity sheet and the substrate, which causes extremely low friction, so that there is extremely low wear in the structural superlubricity device.

[0045] Due to the unique layered stacking structure, the two-dimensional material is easy to bend, and the dislocation between the layers forms a stable and regular corner structure. This is different from the bending of ordinary bulk materials, therefore, the present application can stably make a flat corner without introducing other deformations that will affect its performance by using the property of the two-dimensional material. The shape of the two-dimensional material after bending can be referred to Figure 1 .

[0046] Therefore, the present application provides a structural superlubricity device with edge compression bending, please refer to Figures 2 to 4 , comprising:

[0047] A superlubricity sheet 1, the edge of the two-dimensional material in the superlubricity sheet 1 bends away from the superlubricity surface, and the contact surface area of the superlubricity surface is a horizontal plane.

[0048] The shape of the super-smooth sheet 1 can be square, rectangular, hexagonal, or any other shape. The shape of the rigid film layer 2 can be square, rectangular, hexagonal, or any other shape, as long as the rigid film layer 2 can expose the edge area of the super-smooth sheet 1.

[0049] It should be noted that the number of edge bending of the two-dimensional material of the super-smooth sheet 1 is not limited in the present application.

[0050] As shown in the drawings, in one embodiment of the present application, the single-side edge of the two-dimensional material in the super-smooth sheet 1 bends away from the super-smooth surface, that is, only one side edge area of the two-dimensional material in the super-smooth sheet 1 bends. Figure 2 As shown in the drawings, in another embodiment of the present application, the multiple-side edges of the two-dimensional material in the super-smooth sheet 1 bend away from the super-smooth surface. As shown in the drawings, the opposite two-side edges of the two-dimensional material in the super-smooth sheet 1 bend away from the super-smooth surface; or, as shown in the drawings, the four peripheral edges of the super-smooth sheet 1 bend away from the super-smooth surface, or three or more edges of the two-dimensional material in the super-smooth sheet 1 bend away from the super-smooth surface. When the adjacent edge areas of the super-smooth sheet 1 all bend, in order to eliminate the inconsistent deformation at the intersection point when the adjacent edges all bend upward, the intersection area of the adjacent edges of the super-smooth sheet 1 can be removed. For example, when the shape of the super-smooth sheet 1 is square and the four edges all bend, the four vertex areas of the square super-smooth sheet are removed to obtain a cross-shaped super-smooth sheet, as shown in the drawings.

[0051] Figure 3 Figure 4 Figure 5 As shown in the drawings, when the shape of the super-smooth sheet 1 is pentagonal and the five edges all bend, after removing the five vertex areas, the schematic diagram of the super-smooth sheet 1 is as shown in the drawings. Figure 6

[0052] It should be noted that the structure of the super-smooth sheet 1 is not limited in the present application and can be set as needed. For example, the super-smooth sheet 1 includes multiple layers of two-dimensional materials, or the super-smooth sheet 1 is a single-layer two-dimensional material super-smooth sheet.

[0053] The super-smooth sheet 1 can be a two-dimensional conductor super-smooth sheet, a two-dimensional semiconductor super-smooth sheet, or a two-dimensional insulating super-smooth sheet, all of which are within the protection scope of the present application. The material of the two-dimensional conductor super-smooth sheet includes but is not limited to graphite, graphene, niobium disulfide, and tantalum disulfide. The material of the two-dimensional semiconductor super-smooth sheet includes but is not limited to molybdenum disulfide, tungsten diselenide, tungsten disulfide, and black phosphorus. The material of the two-dimensional insulating super-smooth sheet includes but is not limited to hexagonal boron nitride and mica.

[0054] ​​​​The structural super-slip device in the present application comprises a super-slip sheet, the edges of the super-slip sheet two-dimensional material are bent in a direction away from the super-slip surface, that is, the edge portions are lifted to a certain height, thereby avoiding the contact between the edges of the super-slip sheet two-dimensional material and the substrate, greatly reducing the friction between the super-slip sheet and the substrate, and avoiding wear. At the same time, the contact area of the super-slip surface of the super-slip sheet is a horizontal plane, so that the contact between the super-slip sheet and the substrate is surface contact rather than point contact, thereby avoiding stress concentration and stably bearing higher load, and facilitating the movement of the super-slip sheet controlled by an electrical signal.

[0055] Please refer to Figure 7 On the basis of any of the above embodiments, in an embodiment of the present application, the structural super-slip device further comprises:

[0056] A rigid film layer 2 is arranged on the preset surface of the super-slip sheet 1, the preset surface is opposite to the super-slip surface, and the projection of the rigid film layer 2 on the super-slip surface is located in the contact area.

[0057] It should be noted that the rigid film layer 2 in the present application is not limited, as long as it can ensure that the area corresponding to the rigid film layer 2 remains horizontal during the stamping of the super-slip sheet 1, and the area not covered by the rigid film layer 2 is bent in a direction away from the super-slip surface. For example, the rigid film layer 2 can be a metal layer, or a ceramic layer, etc. The rigid film layer 2 can comprise multiple film layers, or the rigid film layer 2 can be a single film layer.

[0058] The rigid film layer 2 is arranged on the middle area of the preset surface of the super-slip sheet 1, which can make the size of the bent edges equal. Of course, the rigid film layer 2 can also be arranged on one side of the super-slip sheet 1.

[0059] On the basis of any of the above embodiments, in an embodiment of the present application, the structural super-slip device further comprises:

[0060] A substrate in contact with the super-slip surface of the super-slip sheet 1.

[0061] The surface of the substrate in contact with the super-slip sheet 1 is also a super-slip surface, since the edges of the super-slip sheet 1 are bent, the area covered by the rigid film layer 2 is a horizontal plane, and the super-slip sheet 1 and the substrate are in surface contact.

[0062] The material of the substrate can be any one of graphite, HOPG (highly oriented pyrolytic graphite), graphene, molybdenum disulfide, bismuth, molybdenum, and mica.

[0063] The present application also provides a preparation method of a structural super-slip device with edges bent under pressure, please refer to Figure 8 , comprising:

[0064] Step S101: obtaining a structural super-slip pretreatment device including a prefabricated super-slip sheet.

[0065] This step includes:

[0066] Step S1011: depositing a rigid film layer on a preset surface of a substrate.

[0067] Please refer to Figure 9 , the rigid film layer 2 is located on the preset surface of the substrate 3.

[0068] Step S1012: etching the rigid film layer and the substrate to obtain a super-slip island with the surface covered by the rigid film layer.

[0069] Please refer to Figure 10 , depositing a photoresist 4 on the upper surface of the rigid film layer 2, and exposing and developing the photoresist 4 to form a patterned mask; please refer to Figure 11 , etching the rigid film layer 2 and the substrate 3 according to the patterned mask to obtain a super-slip island with the surface covered by the rigid film layer 2.

[0070] Step S1013: removing the rigid film corresponding to the edge of the super-slip island.

[0071] Please refer to Figure 12 and Figure 13 , forming a photoresist 4 again on the upper surface of the rigid film layer 2 corresponding to the edge region of the super-slip island, and etching and removing the rigid film layer 2 not covered by the photoresist 4, and then removing the photoresist.

[0072] Step S1014: dissociating the super-slip island with the edge region not covered by the rigid film layer to obtain a structural super-slip pretreatment device including a rigid film layer and a super-slip sheet.

[0073] When the super-slip sheet 1 has only one side edge region not covered by the rigid film layer 2, the structural diagram of the structural super-slip pretreatment device is as shown in Figure 14 ; when the opposite two side edge regions of the super-slip sheet 1 are not covered by the rigid film layer 2, the structural diagram of the structural super-slip pretreatment device is as shown in Figure 15 .

[0074] Step S102: stamping the structural super-slip pretreatment device to make the edge of the prefabricated super-slip sheet two-dimensional material flex in the direction away from the super-slip surface, and make the contact surface area of the super-slip surface be a horizontal plane, to obtain a structural super-slip device with the edge flexed under pressure.

[0075] The stamping method can be various, which is not limited in the present application.

[0076] As an implementable manner, the structural super-slip pretreatment device is punched to make the edges of the pre-prepared super-slip sheet two-dimensional material bend away from the super-slip surface, and the contact surface area of the super-slip surface is a horizontal plane, which comprises:

[0077] The structural super-slip pretreatment device is placed on a flexible substrate;

[0078] A normal load is applied on the rigid film layer of the structural super-slip pretreatment device, so that the structural super-slip pretreatment device sinks into the flexible substrate, so that the area of the pre-prepared super-slip sheet not covered by the rigid film layer is plastically bent, and the area covered by the rigid film layer remains horizontal.

[0079] Please refer to Figure 16 and Figure 17 The structural super-slip pretreatment device is transferred to a flexible substrate 5 such as PDMS (Polydimethylsiloxane), and a normal load of 10-20 mN is applied on the rigid film layer by a microprobe to make the structural super-slip pretreatment device sink into the substrate by a distance, at this time the super-slip sheet 1 at the edge without the rigid film layer 2 with high rigidity covering it will produce plastic bending upward, the area covered by the rigid film layer 2 remains horizontal, and the shape is maintained after loading and unloading, thereby obtaining a structural super-slip device.

[0080] When the edges of the super-slip sheet are bent, in order to eliminate the inconsistent deformation at the vertex when the edges are bent upward, the vertex area of the super-slip sheet can be removed first, and a rigid film layer is deposited in the central area to obtain a structural super-slip pretreatment device, which is then transferred to a flexible substrate for subsequent processes, thereby obtaining a structural super-slip device with the edges bent upward.

[0081] As another implementable manner, the structural super-slip pretreatment device is punched to make the edges of the pre-prepared super-slip sheet two-dimensional material bend away from the super-slip surface, and the contact surface area of the super-slip surface is a horizontal plane, which comprises:

[0082] The structural super-slip pretreatment device is placed on a groove of a hard substrate;

[0083] A normal load is applied on the rigid film layer of the structural super-slip pretreatment device, so that the structural super-slip pretreatment device sinks into the groove, so that the area of the pre-prepared super-slip sheet not covered by the rigid film layer is plastically bent, and the area covered by the rigid film layer remains horizontal.

[0084] Please refer to Figure 18 and Figure 19The structural super-smooth pre-treatment device is placed on the area corresponding to the groove of the hard substrate 6 (for example, a silicon substrate), and the area of the pre-prepared super-smooth sheet is greater than the area of the groove. Then, the structural super-smooth pre-treatment device is removed from the groove. Compared with punching on the flexible substrate 5, it is easier to control the punching in the groove.

[0085] The rigid film layer can be removed or retained, both of which are within the protection scope of the present application.

[0086] The various embodiments in the specification are described in a progressive manner, and each embodiment focuses on the differences from other embodiments. The same or similar parts of each embodiment can be referred to each other. For the device disclosed by the embodiments, since it corresponds to the method disclosed by the embodiments, the description is relatively simple, and the relevant parts can be referred to the method part.

[0087] The structural super-smooth device and the preparation method thereof are described in detail above. The principles and implementation manners of the present application are described by applying specific examples. The above description of the embodiments is only used to help understand the method and the core idea of the present application. It should be pointed out that the ordinary skilled in the art can make some improvements and modifications to the present application without departing from the principles of the present application. These improvements and modifications also fall within the protection scope of the claims of the present application.

Claims

1. An edge-compressed buckled structural super-slick device, characterized by, The application relates to a super-slippery sheet, comprising: a super-slippery sheet, wherein the edges of the two-dimensional material in the super-slippery sheet are bent in a direction away from the super-slippery surface, and the contact surface area of the super-slippery surface is a horizontal plane; the edges of the two-dimensional material in the super-slippery sheet are bent in a direction away from the super-slippery surface based on the fact that the two-dimensional material has a layered stacking structure, and dislocations between layers form stable and regular corner structures; a rigid film layer arranged on a preset surface of the super-slippery sheet, wherein the preset surface is opposite to the super-slippery surface, and the projection of the rigid film layer on the super-slippery surface is located in the contact surface area; the super-slippery sheet comprises multiple layers of two-dimensional material; the edges of the two-dimensional material in the super-slippery sheet are bent in a direction away from the super-slippery surface on one side, or the edges of the two-dimensional material in the super-slippery sheet are bent in a direction away from the super-slippery surface on multiple sides, wherein when the edge regions of the super-slippery sheet adjacent to each other are bent, the intersection region of the adjacent edges of the super-slippery sheet is removed.

2. The structured super-slip device of claim 1, wherein, the edges of the two-dimensional material in the super-slippery sheet are bent in a direction away from the super-slippery surface on all sides.

3. The structured super-slip device of claim 1, wherein, the rigid film layer is arranged in the middle region of the preset surface of the super-slippery sheet.

4. The structured superlubricity device of claim 1, wherein, the rigid film layer comprises a metal layer.

5. The structured superlubricity device of claim 1, wherein, the rigid film layer comprises multiple layers of film.

6. The structured super-slippery device of any one of claims 1 to 5, wherein, The application further relates to a substrate in contact with the super-slippery surface of the super-slippery sheet. The application relates to a super-slippery sheet, comprising:

7. A method for fabricating a structural super-slippery device based on the edge-pressed buckling of the structural super-slippery device of claim 1, characterized in that, a super-slippery sheet, wherein the edges of the two-dimensional material in the super-slippery sheet are bent in a direction away from the super-slippery surface, and the contact surface area of the super-slippery surface is a horizontal plane; the edges of the two-dimensional material in the super-slippery sheet are bent in a direction away from the super-slippery surface based on the fact that the two-dimensional material has a layered stacking structure, and dislocations between layers form stable and regular corner structures; a rigid film layer arranged on a preset surface of the super-slippery sheet, wherein the preset surface is opposite to the super-slippery surface, and the projection of the rigid film layer on the super-slippery surface is located in the contact surface area; the super-slippery sheet comprises multiple layers of two-dimensional material; the edges of the two-dimensional material in the super-slippery sheet are bent in a direction away from the super-slippery surface on one side, or the edges of the two-dimensional material in the super-slippery sheet are bent in a direction away from the super-slippery surface on multiple sides, wherein when the edge regions of the super-slippery sheet adjacent to each other are bent, the intersection region of the adjacent edges of the super-slippery sheet is removed. the edges of the two-dimensional material in the super-slippery sheet are bent in a direction away from the super-slippery surface on all sides. the rigid film layer is arranged in the middle region of the preset surface of the super-slippery sheet. the rigid film layer comprises a metal layer. the rigid film layer comprises multiple layers of film. The application further relates to a substrate in contact with the super-slippery surface of the super-slippery sheet. The application relates to a super-slippery sheet, comprising: a super-slippery sheet, wherein the edges of the two-dimensional material in the super-slippery sheet are bent in a direction away from the super-slippery surface, and the contact surface area of the super-slippery surface is a horizontal plane; the edges of the two-dimensional material in the super-slippery sheet are bent in a direction away from the super-slippery surface based on the fact that the two-dimensional material has a layered stacking structure, and dislocations between layers form stable and regular corner structures; a rigid film layer arranged on a preset surface of the super-slippery sheet, wherein the preset surface is opposite to the super-slippery surface, and the projection of the rigid film layer on the super-slippery surface is located in the contact surface area; the super-slippery sheet comprises multiple layers of two-dimensional material; the edges of the two-dimensional material in the super-slippery sheet are bent in a direction away from the super-slippery surface on one side, or the edges of the two-dimensional material in the super-slippery sheet are bent in a direction away from the super-slippery surface on multiple sides, wherein when the edge regions of the super-slippery sheet adjacent to each other are bent, the intersection region of the adjacent edges of the super-slippery sheet is removed. the edges of the two-dimensional material in the super-slippery sheet are bent in a direction away from the super-slippery surface on all sides. the rigid film layer is arranged in the middle region of the preset surface of the super-slippery sheet. the rigid film layer comprises a metal layer. the rigid film layer comprises multiple layers of film. The application further relates to a substrate in contact with the super-slippery surface of the super-slippery sheet. The application relates to a super-slippery sheet, comprising: a super-slippery sheet, wherein the edges of the two-dimensional material in the super-slippery sheet are bent in a direction away from the super-slippery surface, and the contact surface area of the super-slippery surface is a horizontal plane; the edges of the two-dimensional material in the super-slippery sheet are bent in a direction away from the super-slippery surface based on the fact that the two-dimensional material has a layered stacking structure, and dislocations between layers form stable and regular corner structures; a rigid film layer arranged on a preset surface of the super-slippery sheet, wherein the preset surface is opposite to the super-slippery surface, and the projection of the rigid film layer on the super-slippery surface is located in the contact surface area; the super-slippery sheet comprises multiple layers of two-dimensional material; the edges of the two-dimensional material in the super-slippery sheet are bent in a direction away from the super-slippery surface on one side, or the edges of the two-dimensional material in the super-slippery sheet are bent in a direction away from the super-slippery surface on multiple sides, wherein when the edge regions of the super-slippery sheet adjacent to each other are bent, the intersection region of the adjacent edges of the super-slippery sheet is removed. the edges of the two-dimensional material in the super-slippery sheet are bent in a direction away from the super-slippery surface on all sides. the rigid film layer is arranged in the middle region of the preset surface of the super-slippery sheet. the rigid film layer comprises a metal layer. the rigid film layer comprises multiple layers of film. The application further relates to a substrate in contact with the super-slippery surface of the super-slippery sheet.

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