Electronic skins are artificial skin-type multifunctional sensors,which hold great potentials in intelligent robotics,limb prostheses and human health monitoring.However,it is a great challenge to indepen-dently and accurately read various physical signals without power supplies.Here,a self-powered flexible temperature-pressure bimodal sensor based on high-performance thermoelectric films and porous micro-coned conductive elastic materials is presented.Through introducing flexible heat-sink design and har-vesting body heat energy,the thin-film thermoelectric device could not only precisely sense temperature signal but also drive the pressure sensor for detecting external tactile stimulus.The integration of Bi-Te based thermoelectric film with high stability in wide temperature range enables the sensor to sense the ambient temperature with high resolution(＜0.1 K)as well as excellent sensitivity(3.77 mV K-1).Mean-while,the porous microconed elastomer responds to pressure variation with low-pressure detection(16 Pa)and a high sensitivity of 37 kPa-1.Furthermore,the bimodal sensor could accurately and simulta-neously monitor human wrist pulse and body temperature in real time,which demonstrates promising applications in self-powered electronic skins for human health monitoring systems.

Yaling Wang;Wei Zhu;Yuan Deng;Pengcheng Zhu;Yuedong Yu;Shaoxiong Hu;Ruifeng Zhang

School of Materials Science and Engineering,Beihang University,Beijing 100191,China;College of Science,Henan Agricultural University,Zhengzhou,450002,China;Hangzhou Innovation Institute,Beihang University,Hangzhou 310052,China;Research Institute for Frontier Science,Beihang University,Beijing 100083,China;Beijing Advanced Innovation Center for Biomedical Engineering,Beihang University,Beijing 100191,China

材料科学技术（英文版）

[1]Yaling Wang;Wei Zhu;Yuan Deng;Pengcheng Zhu;Yuedong Yu;Shaoxiong Hu;Ruifeng Zhang-.High-sensitivity self-powered temperature/pressure sensor based on flexible Bi-Te thermoelectric film and porous microconed elastomer)[J].材料科学技术（英文版）,2022(08):1-7

microconed,coned

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