Abstract
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.
基金项目
National Key R&D Program of China(2018YFA0702100)
Zhejiang Provincial Key R&D Program of China(2021C05002)
Beijing Nova Programme Interdisciplinary Cooperation Project(Z191100001119019)
Beijing Nova Programme Interdisciplinary Cooperation Project(Z191100001119013)
Fundamental Research Funds for the Central Universities()
NETL
NSTL
维普
万方数据