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Thermoelectric sensor based on graphene material, and preparation method thereof

A pyroelectric sensor, graphene technology, applied in the field of sensors, can solve the problems of response lag, poor recovery, slow heat dissipation, etc., and achieve the effects of fast response, fast heat dissipation, and large difference in expansion coefficients

Active Publication Date: 2020-01-17
JIANGSU UNIV
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0003] The purpose of the present invention is to overcome the defects of poor recovery, slow heat dissipation, and hysteresis of response in the prior art, and provide a thermoelectric sensor based on graphene material with excellent recovery, fast heat dissipation, fast response, and simple structure

Method used

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  • Thermoelectric sensor based on graphene material, and preparation method thereof
  • Thermoelectric sensor based on graphene material, and preparation method thereof
  • Thermoelectric sensor based on graphene material, and preparation method thereof

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Embodiment Construction

[0026] The present invention is described in further detail now in conjunction with accompanying drawing. These drawings are all simplified schematic diagrams, which only illustrate the basic structure of the present invention in a schematic manner, so they only show the configurations related to the present invention.

[0027] Such as Figure 1-Figure 2 A specific embodiment of a pyroelectric sensor based on a graphene material of the present invention is shown, which includes a first flexible layer 1, a graphene thermoelectric layer 2 and a second flexible layer 5, and the graphene thermoelectric layer 2 is bonded to the second layer. On a flexible layer 1, the graphene thermoelectric layer 2 is a gate-shaped structure, and the two ends of the graphene thermoelectric layer 2 are provided with lead-out terminals 3, and the lead-out terminals 3 are connected to external circuits through wires 4; the second flexible layer 5 is bonded to the On a flexible layer 1 and graphene t...

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Abstract

The invention belongs to the technical field of sensors, and particularly relates to a thermoelectric sensor based on a graphene material. The thermoelectric sensor comprises a first flexible layer, agraphene thermoelectric layer and a second flexible layer in sequence, wherein the graphene thermoelectric layer is attached to the first flexible layer, the graphene thermoelectric layer is of a grid-shaped structure, leading-out terminals are arranged at both ends of the graphene thermoelectric layer, the leading-out terminals are connected with an external circuit through conducting wires, andthe second flexible layer is attached to the first flexible layer and the graphene thermoelectric layer; and the coefficient of thermal expansion of the first flexible layer is 10 to 50 times greaterthan the coefficient of thermal expansion of the second flexible layer. At the same time, the invention further provides a preparation method of the thermoelectric sensor. The thermoelectric sensor provided by the invention has the advantages of excellent recovery performance, fast heat dissipation, fast response, simple structure and the like.

Description

technical field [0001] The invention belongs to the technical field of sensors, and in particular relates to a graphene material-based pyroelectric sensor and a preparation method thereof. Background technique [0002] Many studies have now involved the development of electrothermal sensors. Structurally, pyroelectric sensors are composed of three layers, generally prepared as a sandwich structure, that is, the active layer and the upper and lower substrates based on the active layer. When electricity is applied, the active layer heats up causing changes in the physical properties of its substrate. Materials with such high thermal conductivity are generally carbon-based materials, such as CNT, graphene, carbon black, etc. Among them, graphene, as a material with the highest thermal conductivity, is often used in flexible devices such as heating films and eye shields. The high thermal conductivity of graphene also further supports the application prospects of graphene as a n...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01K7/02G01K7/16H05B3/14
CPCG01K7/02G01K7/16H05B3/145
Inventor 丁建宁徐修祝周小双袁宁一徐江程广贵
Owner JIANGSU UNIV
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