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A two-dimensional material with ordered wrinkled strain structure and its preparation method and use

A two-dimensional material and wrinkle technology, which is applied in metal material coating process, vacuum evaporation plating, coating, etc., can solve the problem of non-preparation of large-area ordered wrinkle strain structure

Active Publication Date: 2021-08-31
THE NAT CENT FOR NANOSCI & TECH NCNST OF CHINA
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, there is currently no effective method for fabricating large-area ordered wrinkled strained structures on 2D materials.

Method used

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  • A two-dimensional material with ordered wrinkled strain structure and its preparation method and use
  • A two-dimensional material with ordered wrinkled strain structure and its preparation method and use
  • A two-dimensional material with ordered wrinkled strain structure and its preparation method and use

Examples

Experimental program
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Effect test

Embodiment 1

[0067] The present embodiment provides a method for preparing graphene with a single-line cross grid wrinkle array, comprising the steps of:

[0068] (1) Spin-coat one deck PS film (thickness) on the cleaned silicon wafer, then sputter one deck Au layer (thickness 10nm) on PS film by ion sputtering, obtain Au / PS bilayer film;

[0069] (2) Write a cross grid pattern on the Au / PS double-layer film obtained in step (1) by laser direct writing (laser power 5mW, pulse width 100ns), to obtain a patterned Au / PS double-layer film;

[0070] (3) Spin-coat one deck of PPC sacrificial layer on graphene (hereinafter referred to as Gra, carrier material is copper) by using glue homogenizer (rotating speed 3000r / min) as transfer medium; After that, soak the graphene covering PPC sacrificial layer in sulfur In the sodium thiosulfate solution, the carrier material copper is corroded, and the formed PPC / Gra double-layer film will float, and the PPC / Gra double-layer film is taken out, and repeat...

Embodiment 2

[0074] This embodiment provides a method for preparing graphene with a single-line wrinkle array. The difference from Example 1 is that the patterns written in step (2) are parallel lines. The obtained laser three-dimensional topography of graphene with a single-line wrinkled array is as follows: Figure 6 As shown, the height of the fold array is as Figure 7 , indicating that a highly periodic single-line wrinkled array structure is formed on graphene.

Embodiment 3

[0076] This embodiment provides a method for preparing graphene with a cross wrinkled array. The difference from Embodiment 1 is that the pattern written in step (2) is a cross. The obtained laser three-dimensional morphology of graphene with cross-wrinkled arrays is as follows: Figure 8 As shown, the height of the fold array is as Figure 9 As shown, it shows that a highly periodic cross-wrinkle array structure is formed on graphene.

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Abstract

The invention provides a two-dimensional material with ordered wrinkled strain structure, its preparation method and application. The preparation method includes the following steps: plating a metal layer on the thermoplastic polymer film to form a metal / thermoplastic polymer double-layer film; writing a predetermined pattern on the metal / thermoplastic polymer double-layer film through laser direct writing. pattern to obtain a patterned metal / thermoplastic polymer double-layer film; transfer the two-dimensional material to the metal layer of the patterned metal / thermoplastic polymer double-layer film to form a two-dimensional material / metal / thermoplastic polymer three-layer layer film; heating the two-dimensional material / metal / thermoplastic polymer three-layer film to the glass transition temperature of the thermoplastic polymer film ±50°C, and obtaining the two-dimensional material with an ordered wrinkled strain structure after heat treatment . The method provided by the invention successfully realizes the formation of ordered and controllable strain structures on two-dimensional materials.

Description

technical field [0001] The invention belongs to the technical field of two-dimensional materials, and in particular relates to a two-dimensional material with an ordered wrinkled strain structure and its preparation method and application. Background technique [0002] Two-dimensional materials are materials composed of a single layer or a few layers of atoms or molecular layers. The layers are connected by strong covalent bonds or ionic bonds, while the layers are connected by weak van der Waals forces. Two-dimensional materials have unique optoelectronic properties that many traditional materials do not have, especially their excellent nonlinear optical properties have shown great potential in the construction of high-performance, new functional optoelectronic devices. At present, two-dimensional materials mainly include graphene (Graphene), topological insulator (TI), transition metal chalcogenides (TMDCs), black phosphorus (BP) and so on. [0003] Strain is a common acc...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C08J7/00C23C14/16C23C14/34C23C14/58C08L25/06
CPCC08J7/00C08J2325/06C23C14/165C23C14/34C23C14/5873
Inventor 王聪刘前杜乐娜张浩然张心正
Owner THE NAT CENT FOR NANOSCI & TECH NCNST OF CHINA