Flexible Waterproof Piezoresistive Pressure Sensors with Wide Linear Working Range Based on Conductive Fabrics

查看全文 作　　者：Hongcheng [1,2]Xu;Libo [1,2]Gao;Yuejiao [3,4]Wang;Ke [1,2]Cao;Xinkang [1,2]Hu;Liang [5]Wang;Meng [1,2]Mu;Min [1,2]Liu;Haiyan [1,2]Zhang;Weidong [1,2]Wang;Yang [2,3,4]Lu

机构地区：[1]School of Mechano‑Electronic Engineering,Xidian University,Xi’an 710071,People’s Republic of China;[2]CityU-Xidian Joint Laboratory of Micro/Nano-Manufacturing,Xi’an 710071,People’s Republic of China;[3]Department of Mechanical Engineering,City University of Hong Kong,Kowloon 999077,Hong Kong SAR,People’s Republic of China;[4]Nano‑Manufacturing Laboratory(NML),Shenzhen Research Institute of City University of Hong Kong,Shenzhen 518057,People’s Republic of China;[5]Micro‑/Nano‑technology Research Center,State Key Laboratory for Manufacturing Systems Engineering,Xi’an Jiaotong University,Xi’an 710049,People’s Republic of China

出　　处：《Nano-Micro Letters》索引2020年第12卷第11期,共13页

基　　金：the financial support of the project from the National Natural Science Foundation of China(No.61904141);the funding of Natural Science Foundation of Shaanxi Province(No.2020JQ-295);the Key Research and Development Program of Shaanxi(Program No.2020GY-252);National Key Laboratory of Science and Technology on Vacuum Technology and Physics(HTKJ2019KL510007);City University of Hong Kong(Project Nos.7005070 and 9667153);Shenzhen Science and Technology Innovation Committee under the Grant JCYJ20170818103206501。 摘　　要：Developing flexible sensors with high working performance holds intense interest for diverse applications in leveraging the Internet-of-things(IoT)infrastructures.For flexible piezoresistive sensors,traditionally most efforts are focused on tailoring the sensing materials to enhance the contact resistance variation for improving the sensitivity and working range,and it,however,remains challenging to simultaneously achieve flexible sensor with a linear working range over a high-pressure region(>100 kPa)and keep a reliable sensitivity.Herein,we devised a laserengraved silver-coated fabric as'soft'sensor electrode material to markedly advance the flexible sensor's linear working range to a level of 800 kPa with a high sensitivity of 6.4 kPa^-1 yet a fast response time of only 4 ms as well as long-time durability,which was rarely reported before.The integrated sensor successfully routed the wireless signal of pulse rate to the portable smartphone,further demonstrating its potential as a reliable electronic.Along with the rationally building the electrode instead of merely focusing on sensing materials capable of significantly improving the sensor's performance,we expect that this design concept and sensor system could potentially pave the way for developing more advanced wearable electronics in the future. 关键词：Flexible sensor PIEZORESISTIVE Graphite flakes Laser engraving Silver fabrics

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Flexible Waterproof Piezoresistive Pressure Sensors with Wide Linear Working Range Based on Conductive Fabrics

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