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Wearable flexible sensor and preparation method thereof

A flexible sensor and flexible technology, applied in instruments, measuring devices, fluid pressure measurement by changing ohmic resistance, etc., can solve the problems of linearity influence and limit sensor, etc., achieve various structural forms, high sensitivity and linearity, and improve Effect of Surface Roughness and Conductivity

Inactive Publication Date: 2021-06-25
UNIV OF ELECTRONICS SCI & TECH OF CHINA
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] With the rise of the wearable market at home and abroad, the miniaturization of electronic components, and the development of skin-like flexible sensors, the demand for flexible sensors is increasing. The current flexible sensors are flexible, stretchable, freely bendable and even foldable. , easy to carry, wearable, etc., among which the choice of flexible substrate plays an important role, otherwise it will limit the application of the sensor and affect the sensitivity, wide pressure range, linearity, etc. of the sensor

Method used

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  • Wearable flexible sensor and preparation method thereof
  • Wearable flexible sensor and preparation method thereof
  • Wearable flexible sensor and preparation method thereof

Examples

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Effect test

Embodiment 1

[0036] A preparation method of a wearable flexible sensor, comprising the following preparation steps:

[0037] S1: Clean the non-woven cotton and dry it in an oven, print conductive silver paste on the non-woven cotton by screen printing process, put it into the oven for drying (70°C, 1h), and obtain a flexible substrate with electrodes.

[0038] S2: Another non-woven cotton is taken, and the PEDOT polymer formed by gas-phase polymerization on its surface is cleaned and dried to obtain a piezoresistive layer; specifically:

[0039] S21: washing the non-woven cotton with ethanol and deionized water and drying;

[0040] S22: Add 1mol / L FeCl 3 .6H 2 O as an oxidizing agent was dissolved in isopropanol by ultrasonic waves for 15 minutes, and then dripped and infiltrated onto non-woven cotton to obtain permeated FeCl 3 The flexible bottom plate;

[0041] S23: will be infiltrated with FeCl 3 Put the flexible bottom plate and EDOT solution into a vacuum container for gas-phase ...

Embodiment 2

[0049] A preparation method of a wearable flexible sensor, comprising the following preparation steps:

[0050] S1: Clean the non-woven cotton and dry it in an oven, print conductive silver paste on the non-woven cotton by screen printing process, put it into the oven for drying (70°C, 1h), and obtain a flexible substrate with electrodes.

[0051] S2: Another non-woven cotton is taken, and the PEDOT polymer formed by gas-phase polymerization on its surface is cleaned and dried to obtain a piezoresistive layer; specifically:

[0052] S21: washing the non-woven cotton with ethanol and deionized water and drying;

[0053] S22: 0.8mol / L FeCl 3 .6H 2 O as an oxidizing agent was dissolved in isopropanol by ultrasonic waves for 15 minutes, and then dripped and infiltrated onto non-woven cotton to obtain permeated FeCl 3 The flexible bottom plate;

[0054] S23: will be infiltrated with FeCl 3 Put the flexible bottom plate and EDOT solution into a vacuum container for gas-phase po...

Embodiment 3

[0059] A preparation method of a wearable flexible sensor, comprising the following preparation steps:

[0060] S1: Clean the non-woven cotton and dry it in an oven, print conductive silver paste on the non-woven cotton by screen printing process, put it into the oven for drying (70°C, 1h), and obtain a flexible substrate with electrodes.

[0061] S2: Another non-woven cotton is taken, and the PEDOT polymer formed by gas-phase polymerization on its surface is cleaned and dried to obtain a piezoresistive layer; specifically:

[0062] S21: washing the non-woven cotton with ethanol and deionized water and drying;

[0063] S22: 0.5mol / L FeCl 3 .6H 2 O as an oxidizing agent was dissolved in isopropanol by ultrasonic waves for 15 minutes, and then dripped and infiltrated onto non-woven cotton to obtain permeated FeCl 3 The flexible bottom plate;

[0064] S23: will be infiltrated with FeCl 3 Put the flexible bottom plate and EDOT solution into a vacuum container for gas-phase po...

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Abstract

The invention discloses a wearable flexible sensor and a preparation method thereof, which belong to the technical field of wearable electronic devices. The wearable flexible sensor comprises a flexible substrate, an electrode, a piezoresistive layer and a PDMS packaging layer which are sequentially arranged from bottom to top, the piezoresistive layer is composed of a flexible bottom plate and a PEDOT polymer formed by gas phase polymerization on the surface of the flexible bottom plate, and the surface of the piezoresistive layer is provided with a microstructure conforming to Gaussian distribution; The wearable flexible sensor provided by the invention has good flexibility and ductility, various structural forms, good comfort and air permeability, and has linearity, high sensitivity and excellent detection performance in a large range.

Description

technical field [0001] The invention belongs to the technical field of wearable electronic devices, in particular to a wearable flexible sensor and a preparation method thereof. Background technique [0002] At present, all kinds of sensors have penetrated into all aspects of industrial production, marine exploration, environmental protection, medical diagnosis, bioengineering, smart home, etc.; with the increasing application requirements of the information age, the range of measured information, The expected value and idealized requirements of various performance parameters such as accuracy and stability are gradually increasing, and new challenges are posed to ordinary sensors for the measurement requirements in special environments and special signals. [0003] With the rise of the wearable market at home and abroad, the miniaturization of electronic components, and the development of skin-like flexible sensors, the demand for flexible sensors is increasing. The current ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01L1/22G01L9/06
CPCG01L1/22G01L9/06
Inventor 于军胜胡峻菘杨根杰李颖李璐
Owner UNIV OF ELECTRONICS SCI & TECH OF CHINA
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