Synergistic piezoelectricity enhanced BaTiO_(3)/polyacrylonitrile elastomer-based highly sensitive pressure sensor for intelligent sensing and posture recognition applications  

作　　者：Junbin Yu Shuai Xian Zhenpeng Zhang Xiaojuan Hou Jian He Jiliang Mu Wenping Geng Xiaojun Qiao Le Zhang Xiujian Chou 

机构地区：[1]Science and Technology on Electronic Test and Measurement Laboratory,North University of China,Taiyuan 030051,China

出　　处：《Nano Research》2023年第4期5490-5502,共13页纳米研究（英文版）

基　　金：supported by the National Natural Science Foundation of China(Nos.62101513,51975542,52175554,and 62171414);China Postdoctoral Science Foundation(Nos.2022TQ0230 and 2022M712324);Shanxi“1331 Project”Key Subject Construction(No.1331KSC);the Fundamental Research Program of Shanxi Province(No.20210302124170);Young Academic Leaders of North University of China(No.11045501).

摘　　要：Designing stretchable and skin-conformal self-powered sensors for intelligent sensing and posture recognition is challenging.Here,based on a multi-force mixing and vulcanization process,as well as synergistically piezoelectricity of BaTiO_(3)and polyacrylonitrile,an all-in-one,stretchable,and self-powered elastomer-based piezo-pressure sensor(ASPS)with high sensitivity is reported.The ASPS presents excellent sensitivity(0.93 V/104 Pa of voltage and 4.92 nA/104 Pa of current at a pressure of 10-200 kPa)and high durability(over 10,000 cycles).Moreover,the ASPS exhibits a wide measurement range,good linearity,rapid response time,and stable frequency response.All components were fabricated using silicone,affording satisfactory skinconformality for sensing postures.Through cooperation with a homemade circuit and artificial intelligence algorithm,an information processing strategy was proposed to realize intelligent sensing and recognition.The home-made circuit achieves the acquisition and wireless transmission of ASPS signals(transmission distance up to 50 m),and the algorithm realizes the classification and identification of ASPS signals(accuracy up to 99.5%).This study proposes not only a novel fabrication method for developing self-powered sensors,but also a new information processing strategy for intelligent sensing and recognition,which offers significant application potential in human-machine interaction,physiological analysis,and medical research.

关 键 词：flexible pressure sensor synergistic piezoelectricity all-in-one structure high sensitivity intelligent sensing and recognition 

分 类 号：TP212[自动化与计算机技术—检测技术与自动化装置]