A kind of flexible body temperature sensor and preparation method thereof

A body temperature sensor and temperature sensor technology, applied in the field of nanotechnology and sensors, can solve the problems of no temperature sensitive range resolution, difficult to fit human skin, unstable material properties, etc., and achieve good application prospects, good response characteristics, weight light effect

Active Publication Date: 2021-06-25
NINGBO INST OF MATERIALS TECH & ENG CHINESE ACADEMY OF SCI
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] So far, people have made a lot of efforts on flexible temperature sensors. Although great progress has been made, there are still some shortcomings in the temperature sensor used to measure human body temperature: there is no suitable temperature sensitive range and high enough temperature sensor for human body temperature measurement. The resolution is not easy to fit with human skin, the structure is more complex, not portable, and the material performance is unstable, etc.

Method used

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  • A kind of flexible body temperature sensor and preparation method thereof
  • A kind of flexible body temperature sensor and preparation method thereof

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Experimental program
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Effect test

Embodiment 1

[0027] The structure of the flexible temperature sensor is as figure 1 As shown, the electrode 2 is located on the flexible substrate 1 , the sensitive layer 3 is located on the electrode 2 , and the packaging layer 4 is used to package the sensitive layer 3 .

[0028] The flexible substrate 1 is a polyimide film. Electrode 2 is a silver interdigitated electrode. The material of the sensitive layer 3 is a composite material of graphene and poly(3,4-ethylenedioxythiophene): polystyrene sulfonate (PEDOT:PSS), wherein the mass ratio of graphene to PEDOT:PSS is 1: 100. The material of the encapsulation layer 4 is polydimethylsiloxane.

[0029] The preparation method of the above-mentioned flexible temperature sensor comprises the following steps:

[0030] (1) Polyimide film is used as a flexible substrate, and the flexible substrate is ultrasonically cleaned by ethanol and acetone for 15 minutes. After ultrasonic cleaning, it is dried at 100° C. for 10 minutes in a constant te...

Embodiment 2

[0039] The structure of the flexible temperature sensor is as figure 1 As shown, the electrode 2 is located on the flexible substrate 1 , the sensitive layer 3 is located on the electrode 2 , and the packaging layer 4 is used to package the sensitive layer 3 .

[0040] The flexible substrate 1 is a polyethylene terephthalate film. Electrode 2 is a silver interdigitated electrode. The material of the sensitive layer 3 is a composite material of graphene and poly(3,4-ethylenedioxythiophene): polystyrene sulfonate (PEDOT:PSS), wherein the mass ratio of graphene to PEDOT:PSS is 1: 10. The material of the encapsulation layer 4 is polyimide.

[0041] The preparation method of the above-mentioned flexible temperature sensor comprises the following steps:

[0042] (1) Polyethylene terephthalate film is used as a flexible substrate, and the flexible substrate is ultrasonically cleaned with ethanol and acetone for 30 minutes. After ultrasonic cleaning, it is dried at 80°C for 20 min...

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Abstract

The invention discloses a flexible body temperature sensor and a preparation method thereof. The sensor includes a flexible substrate, an electrode on the flexible substrate, a sensitive layer on the electrode, and an encapsulation layer for encapsulating the sensitive layer. The sensitive layer is graphene and poly(3,4-ethylenedioxythiophene):polyphenylene Composite material of ethylene sulfonate. The sensor has good flexibility and can be attached to the skin of the test body, and its resistance has a good response characteristic to temperature, especially between 25°C and 45°C, the resistance can respond linearly with temperature, so it is useful for body temperature detection. High sensitivity.

Description

technical field [0001] The invention relates to the field of nanotechnology and sensor technology, in particular to a flexible body temperature sensor and a preparation method thereof. Background technique [0002] Human body temperature is closely related to the metabolic response in the human physiological system, and is an important indicator for judging human health and disease, and is the basis for determining treatment. Therefore, the accurate detection of human body temperature has important value. [0003] In traditional medical diagnosis, body temperature is measured using a medical infrared camera or a mercury thermometer. Medical infrared cameras have high precision and high resolution, but are expensive and not portable. Mercury thermometers are easily damaged, and there is a problem that the toxic mercury inside is easy to leak and pollute the environment. Therefore, it is one of the research topics for scientific and technological workers to develop a temper...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G01K7/18
CPCG01K7/18
Inventor 宋伟杰杨鹏宇吕大伍沈文锋杨晔谭瑞琴
Owner NINGBO INST OF MATERIALS TECH & ENG CHINESE ACADEMY OF SCI
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