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A biological non-toxic, degradable high-sensitivity temperature sensor chip and its preparation method and application

A sensor chip, chip body technology, applied to thermometers, thermometers, instruments and other directions with physical/chemical changes, can solve the problems of large natural errors, low measurement accuracy, difficult degradation, etc., to reduce volume and cost, The effect of high response sensitivity and good electrical conductivity

Active Publication Date: 2020-11-10
RENMIN UNIVERSITY OF CHINA
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  • Abstract
  • Description
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AI Technical Summary

Problems solved by technology

These sensors are suitable for various fields due to their different temperature measurement ranges, precision and sensitivity. For example, mercury sensors are suitable for human body temperature measurement due to their high precision and convenience of measurement, but their test temperature range is too narrow; thermocouple temperature Sensors are widely used in ambient temperature measurement due to their wide temperature range, robustness, and no need for power supply, but the measurement accuracy is low; thermal sensors are used for various industrial temperature monitoring due to their high sensitivity. Large error and poor linear relationship between temperature and resistance
At the same time, these sensors have a series of problems such as biological toxicity, poor environmental compatibility of materials, and refractory degradation.
These problems are not conducive to the construction of an environmentally friendly society in our country, and seriously restrict the sustainable development of society. Therefore, the toxicity and degradability of sensing materials are an important technical problem that temperature sensors need to solve urgently.

Method used

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  • A biological non-toxic, degradable high-sensitivity temperature sensor chip and its preparation method and application
  • A biological non-toxic, degradable high-sensitivity temperature sensor chip and its preparation method and application
  • A biological non-toxic, degradable high-sensitivity temperature sensor chip and its preparation method and application

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Embodiment 1

[0034] Embodiment 1, the preparation of conductive liquid temperature sensor chip and its response to temperature

[0035] 1. The structure of the conductive liquid temperature sensor chip

[0036] Such as figure 1 As shown, the temperature sensing chip of the present invention includes a chip body with a thickness of 2 to 200 microns made of degradable polymer materials such as polyvinyl alcohol, polylactic acid, polyethylene glycol or polycaprolactone; A microchannel with a depth of 1-1000 microns, a width of 1-1000 microns, and a length of 0.01-10 cm; the two ends of the micro-channel communicate with the outside through the openings on the chip body to form an electrode interface; the electrode interface It is connected with matching electrodes; the micro-channel is filled with conductive liquid, and the solvent of the conductive liquid is either water or alcohol; the chemical formula of alcohol is CH 3 (CH 2 ) n OH, HO (CH 2 ) n OH, HO (CH 2 Oh) n OH or HO(CH 2 )...

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Abstract

The invention discloses a biologically non-toxic and degradable high-sensitivity temperature sensing chip and a preparation method and an application thereof. The temperature sensing chip provided bythe invention includes a chip body which is filled with conductive liquid and is made of a degradable polymer material. The solvent of the conductive liquid is either water or alcohol, and the soluteis sugar, high-molecular polymer, inorganic salt, acid or inorganic base. Compared with the traditional temperature sensing chip, the temperature sensing chip of the invention is biologically non-toxic and degradable, has no pollution to the environment, is harmless to the human body, is smaller and cheaper, has a simple structure, is convenient to operate, has high response sensitivity, is convenient to carry and cheap, and can be mass-produced.

Description

technical field [0001] The invention relates to a biologically nontoxic, degradable high-sensitivity temperature sensing chip, a preparation method and application thereof, and belongs to the field of temperature sensors. Background technique [0002] With the process of industrial modernization in my country and the continuous high-speed growth of the electronic information industry, temperature sensors, as a sensor for judging the degree of coldness and heat of objects, account for more than 40% of the total demand for sensors. Existing temperature sensors are mainly glass sensors with liquid mercury as the sensing element, thermocouple temperature sensors with copper as the sensing element, and heat-sensitive temperature sensors with semiconductors as the sensing element. These sensors are suitable for various fields due to their different temperature measurement ranges, precision and sensitivity. For example, mercury sensors are suitable for human body temperature measur...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G01K11/00
CPCG01K11/00
Inventor 王亚培陶行磊廖声茏
Owner RENMIN UNIVERSITY OF CHINA
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