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Prestretching-based graphene flexible strain sensor and preparation method thereof

A strain sensor, graphene technology, applied in the direction of electric/magnetic solid deformation measurement, electromagnetic measurement device, etc., can solve the problems of low stretchability of single-layer graphene structure, low sensitivity of flexible strain sensor, low transfer success rate, etc. , to achieve the effect of realizing mass production, improving the success rate of production and simplifying the production process

Active Publication Date: 2019-03-26
XIDIAN UNIV
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  • Abstract
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Problems solved by technology

[0006] The object of the present invention is to provide a graphene flexible strain sensor based on pre-stretching, which solves the problem of low sensitivity of the graphene flexible strain sensor prepared by redox method in the prior art
[0007] Another object of the present invention is to provide a method for preparing a graphene flexible strain sensor based on pre-stretching, which solves the problem that the graphene flexible strain sensor prepared by the wet transfer method in the prior art is easily damaged during the transfer process, and the transfer is successful. Low efficiency, complicated operation, low stretchability and poor repeatability of single-layer graphene structure

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  • Prestretching-based graphene flexible strain sensor and preparation method thereof
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  • Prestretching-based graphene flexible strain sensor and preparation method thereof

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Embodiment Construction

[0031] The technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the embodiments of the present invention. Apparently, the described embodiments are only some of the embodiments of the present invention, not all of them. Based on the embodiments of the present invention, all other embodiments obtained by persons of ordinary skill in the art without making creative efforts belong to the protection scope of the present invention.

[0032] The thinking of the present invention is: graphene is a kind of by sp 2 A two-dimensional material formed by a network of hybridized carbon atoms has excellent mechanical, electrical, optical, chemical and magnetic properties. Combining graphene with flexible polymers can prepare graphene-based flexible large-strain sensors. When the sensor is subjected to tension, the graphene network structure will break, causing a change in the resistance of the sensor. The inventi...

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Abstract

The invention discloses a prestretching-based graphene flexible strain sensor and a preparation method thereof. The prestretching-based graphene flexible strain sensor comprises a released substrate;a graphene sensitive layer is arranged on the released substrate; conductive silver adhesives are arranged at the joints of the two ends of the graphene sensitive layer and the released substrate, andelectrodes are arranged on the upper surfaces of the conductive silver adhesives. The preparation method of the prestretching-based graphene flexible strain sensor comprises the following steps: prestretching a substrate before transferring a graphene film, and completing the transferring of the graphene film through a dry transfer method, thereby preparing the graphene flexible strain sensor based on prestretching. Larger strain measurement is achieved by the sensor provided in the invention through pre-stretching, and good stability and repeatability are achieved; the manufacturing successrate is increased through a dry transfer method, the preparation method is simplified, and large-scale manufacturing is achieved.

Description

technical field [0001] The invention belongs to the technical field of flexible electronics, in particular to a pre-stretched graphene flexible strain sensor and a preparation method thereof. Background technique [0002] With the development and integration of emerging interdisciplinary disciplines and directions such as bionic electronics, biomechanics, medical engineering, new material technology, sensor technology, and robotics, flexible strain sensors have attracted the attention and research of researchers, doctors, and engineers. Traditional strain sensors are mainly based on metal and semiconductor materials, which have certain sensitivity, but the disadvantages are that the material is hard and the stretchability is poor, less than <5%, which limits the application range of traditional strain sensors. Compared with traditional strain sensors, flexible strain sensors overcome the shortcomings of hard materials and poor stretchability, and have the advantages of fl...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01B7/16
CPCG01B7/18
Inventor 吕晓洲杨嘉怡胡翰伦
Owner XIDIAN UNIV
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