纳米发生器
织物
可穿戴计算机
电极
压电
材料科学
可穿戴技术
纳米技术
计算机科学
复合材料
嵌入式系统
物理
量子力学
作者
Xiaoqian Wan,Yunchu Shen,Tian Luo,Mingming Xu,Honglian Cong,Chaoyu Chen,Gaoming Jiang,Haijun He
出处
期刊:ACS Sensors
[American Chemical Society]
日期:2024-05-21
卷期号:9 (6): 2989-2998
被引量:5
标识
DOI:10.1021/acssensors.4c00158
摘要
Flexible, air permeable and elastic self-powered sensors for human motion monitoring and assisted medical rehabilitation have recently become a hot research topic. However, most current piezoelectric sensors can not account for many characteristics. Addressing this challenge, an all-textile piezoelectric sensor (ATPS) based on 3D structured knitted fabric electrodes is reported. The ATPS consists of a piezoelectric element polyvinylidene fluoride nanofiber membrane, flexible knitted fabric electrodes, and an elastic self-adhesive bandage. Based on the flexible and efficient knitting technology, the sensor has the advantages of low cost, flexibility, simple structure, and convenient large-area manufacturing. Experimental and finite element simulation results show that the knitting pattern of fabric electrodes can enhance the piezoelectric output of ATPS. The optimal ATPS has a high voltage response sensitivity of up to 0.68 V/kPa. The proposed ATPS responds to a wide range of input forces from 0.098 to 724 N in self-powered mode, verifying its feasibility as a tactile sensor for human motion detection and recognition (throat swallowing, wrist bending, elbow bending, knee bending, walking slowly, running fast) and as a pressure sensor (Morse code, digit recognition) and demonstrating its potential for motion tracking, medical rehabilitation, and human-computer interaction.
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