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Sensitivity Enhancement of Soft Capacitive Pressure Sensors Using a Solvent Evaporation-Based Porosity Control Technique

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Published on: March 24, 2023

Dual-Mode Textile Sensor Based on PEDOT:PSS/SWCNTs Composites for Pressure-Temperature Detection.

Ying Wang¹, Qingchao Zhang², Zhidong Zhang³

¹School of Energy and Power Engineering, North University of China, Taiyuan 030051, China.

|January 25, 2025

Summary

This study introduces a dual-parameter smart e-textile capable of simultaneously monitoring human pulse and body temperature without signal interference. This innovation holds promise for advanced wearable self-powered devices and medical healthcare applications.

Keywords:

PEDOT:PSS/SWCNTs e-textiles flexible sensor pressure–temperature sensing

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Last Updated: May 31, 2025

Sensitivity Enhancement of Soft Capacitive Pressure Sensors Using a Solvent Evaporation-Based Porosity Control Technique

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Published on: March 24, 2023

Author Spotlight: Microfluidic Channel-Based Soft Electrodes and Their Application in Capacitive Pressure Sensing

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Published on: March 17, 2023

A Simple and Scalable Fabrication Method for Organic Electronic Devices on Textiles

A Simple and Scalable Fabrication Method for Organic Electronic Devices on Textiles

Published on: March 13, 2017

Area of Science:

Materials Science
Electronics
Wearable Technology

Background:

Intelligent electronic textiles (e-textiles) offer vast application potential but struggle with distinguishing multiple stimuli.
Real-time, interference-free detection of multiple parameters in e-textiles remains a significant challenge.

Purpose of the Study:

To develop a novel dual-parameter smart e-textile for simultaneous, high-performance detection of human pulse and body temperature.
To investigate the sensing properties of PEDOT:PSS/SWCNTs composites for pressure and temperature detection.

Main Methods:

Fabricating a PEDOT:PSS/SWCNTs/CS@PET-textile (PSCP) sensor by doping single-walled carbon nanotubes (SWCNTs) into PEDOT:PSS.
Evaluating the sensor's performance for pressure detection (sensitivity, response time, durability) and temperature sensing (Seebeck coefficient).

Main Results:

The PSCP sensor demonstrated high sensitivity (32.4 kPa⁻¹) and fast response (~21 ms) for pressure detection with excellent durability (>2000 cycles).
The sensor exhibited a high Seebeck coefficient (25 μV/K) over a wide temperature range (0-120 K) with a linear relationship.
The dual-mode sensor successfully achieved real-time simultaneous monitoring of pulse signals and body temperature without interference.

Conclusions:

The developed dual-parameter e-textile enables simultaneous, interference-free monitoring of pulse and temperature, showcasing its potential in medical healthcare.
The sensor's ability to harness temperature gradients offers a novel pathway for developing self-powered wearable devices.