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Ultra-sensitive temperature sensor based on molecular device

A temperature sensor and molecular device technology, applied in the field of temperature sensing, can solve the problems of low sensitivity of temperature sensor, difficult to apply in small space, large size of temperature sensor, etc., and achieve the effect of high sensitivity, easy application in small space and small volume

Inactive Publication Date: 2020-08-18
金华伏安光电科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Traditional temperature sensors have low sensitivity
Based on optical principles, temperature sensors such as fiber gratings are bulky and not easy to apply in small spaces

Method used

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  • Ultra-sensitive temperature sensor based on molecular device
  • Ultra-sensitive temperature sensor based on molecular device

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0018] The present invention provides an ultrasensitive temperature sensor based on molecular devices, such as figure 1 As shown, the temperature sensor includes a substrate 1 , a thermal expansion layer 2 , a source 3 , a drain 4 , and organic molecules 5 . The thermal expansion layer 2 is an insulating material, and the thermal expansion layer 2 is placed on the substrate 1 . The source electrode 3 , the drain electrode 4 and the organic molecule 5 are placed on the thermal expansion layer 2 . The material of the source electrode 3 and the drain electrode 4 is gold or graphene. Organic molecules 5 extend between the source 3 and the drain 4 . That is to say, the organic molecule 5 is placed on the thermal expansion layer 2 and connected between the source electrode 3 and the drain electrode 4, and the connection may be physical contact, covalent bond connection or chemical adsorption connection. The organic molecule 5 is dodecyl mercaptan, anthracene mercaptan, and octyl ...

Embodiment 2

[0022] On the basis of Embodiment 1, the thermal expansion layer 2 includes a positive thermal expansion material portion 21 and a negative thermal expansion material portion 22 . Such as figure 2 As shown, the positive thermal expansion material part 21 is located under the organic molecule 5 , and the negative thermal expansion material part 22 is located under the source electrode 3 and the drain electrode 4 . When the thermal expansion layer 2 absorbs heat, the positive thermal expansion material part 21 expands and elongates the organic molecule 5; the negative thermal expansion material part 22 contracts, which is equivalent to pulling the positive thermal expansion material part 21, so that the positive thermal expansion material part 21 expands more, which also makes the positive thermal expansion material part 21 expand. The organic molecule 5 is elongated more, produces more deformation, changes more the conductance between the source electrode 3 and the drain elect...

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PUM

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Abstract

The invention provides an ultra-sensitive temperature sensor based on a molecular device. Organic molecules are arranged on a thermal expansion layer. During use, the thermal expansion layer absorbs heat to expand or contract and organic molecules deform in a to-be-measured environment, so that the activation energy of the organic molecules is changed, the conductivity of the organic molecules ischanged, the conductivity between the source and the drain is changed, and the temperature is determined through the conductivity between the source and the drain. The conductivity of organic molecules is very sensitive to deformation, so that the ultra-sensitive temperature sensor has the advantage of high sensitivity. In addition, the ultra-sensitive temperature sensor r is small in size and easy to apply in a small space, and has an important application prospect in the field of temperature sensing.

Description

technical field [0001] The invention relates to the field of temperature sensing, in particular to an ultrasensitive temperature sensor based on molecular devices. Background technique [0002] Temperature sensors are widely used in all aspects of production and life. Traditional temperature sensors include thermocouple and thermal resistance temperature sensors. Traditional temperature sensors have low sensitivity. Based on optical principles, temperature sensors such as fiber gratings are bulky and not easy to apply in small spaces. Contents of the invention [0003] In order to solve the above problem, the present invention provides a kind of ultrasensitive temperature sensor based on molecular device, and this temperature sensor comprises substrate, thermal expansion layer, source electrode, drain electrode, organic molecule, and thermal expansion layer is insulating material, and thermal expansion layer is placed on lining On the bottom, the source, drain, and orga...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01K5/52
CPCG01K5/52
Inventor 不公告发明人
Owner 金华伏安光电科技有限公司
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