Stretchable and anti-impact iontronic pressure sensor with an ultrabroad linear range for biophysical monitoring and deep learning-aided knee rehabilitation  

作　　者：Hongcheng Xu Libo Gao Haitao Zhao Hanlin Huang Yuejiao Wang Gang Chen Yuxin Qin Ningjuan Zhao Dandan Xu Ling Duan Xuan Li Siyu Li Zhongbao Luo Weidong Wang Yang Lu 

机构地区：[1]School of Mechano-Electronic Engineering,Xidian University,Xi’an 710071,China [2]CityU-Xidian Joint Laboratory of Micro/Nano-Manufacturing,Shenzhen 518057,China [3]Materials Interfaces Center,Shenzhen Institutes of Advanced Technology,Chinese Academy of Sciences,Shenzhen 518055 Guangdong,P.R.China [4]Key Laboratory of Instrumentation Science and Dynamic Measurement,Ministry of Education,North University of China,Taiyuan 030051,China [5]Nano-Manufacturing Laboratory(NML),Shenzhen Research Institute of City University of Hong Kong,Shenzhen 518057,China [6]Department of Mechanical Engineering,City University of Hong Kong,Hong Kong SAR,Kowloon 999077,Hong Kong

出　　处：《Microsystems & Nanoengineering》2021年第6期107-117,共11页微系统与纳米工程（英文）

基　　金：The authors would like to acknowledge the financial support provided by the National Natural Science Foundation of China(No.61904141);the Natural Science Foundation of Shaanxi Province(No.2020JQ-295);the China Postdoctoral Science Foundation(2020M673340);the Fundamental Research Funds for the Central Universities(JB210407);the Key Research and Development Program of Shaanxi(Program No.2020GY-252 and No.2021GY277);the Shenzhen-Hong Kong-Macao Technology Research Program(Type C,SGDX2020110309300301);the Fundamental Research Funds for the Central Universities;the Innovation Fund of Xidian University.

摘　　要：Monitoring biophysical signals such as body or organ movements and other physical phenomena is necessary for patient rehabilitation.However,stretchable flexible pressure sensors with high sensitivity and a broad range that can meet these requirements are still lacking.Herein,we successfully monitored various vital biophysical features and implemented in-sensor dynamic deep learning for knee rehabilitation using an ultrabroad linear range and highsensitivity stretchable iontronic pressure sensor(SIPS).We optimized the topological structure and material composition of the electrode to build a fully stretching on-skin sensor.The high sensitivity(12.43 kPa^(−1)),ultrabroad linear sensing range(1 MPa),high pressure resolution(6.4 Pa),long-term durability(no decay after 12000 cycles),and excellent stretchability(up to 20%)allow the sensor to maintain operating stability,even in emergency cases with a high sudden impact force(near 1 MPa)applied to the sensor.As a practical demonstration,the SIPS can positively track biophysical signals such as pulse waves,muscle movements,and plantar pressure.Importantly,with the help of a neuro-inspired fully convolutional network algorithm,the SIPS can accurately predict knee joint postures for better rehabilitation after orthopedic surgery.Our SIPS has potential as a promising candidate for wearable electronics and artificial intelligent medical engineering owing to its unique high signal-to-noise ratio and ultrabroad linear range.

关 键 词：IMPACT durability STRETCHING 

分 类 号：TP212.3[自动化与计算机技术—检测技术与自动化装置]