气候变化领域集成服务门户(CCPortal): Iontronic pressure sensor with high sensitivity and linear response over a wide pressure range based on soft micropillared electrodes

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DOI	10.1016/j.scib.2021.02.019
	Iontronic pressure sensor with high sensitivity and linear response over a wide pressure range based on soft micropillared electrodes
	Lu P.; Wang L.; Zhu P.; Huang J.; Wang Y.; Bai N.; Wang Y.; Li G.; Yang J.; Xie K.; Zhang J.; Yu B.; Dai Y.; Guo C.F.
发表日期	2021
ISSN	20959273
起始页码	1091
结束页码	1100
卷号	66 期号:11
英文摘要	Electronic skins and flexible pressure sensors are important devices for advanced healthcare and intelligent robotics. Sensitivity is a key parameter of flexible pressure sensors. Whereas introducing surface microstructures in a capacitive-type sensor can significantly improve its sensitivity, the signal becomes nonlinear and the pressure response range gets much narrower, significantly limiting the applications of flexible pressure sensors. Here, we designed a pressure sensor that utilizes a nanoscale iontronic interface of an ionic gel layer and a micropillared electrode, for highly linear capacitance-to-pressure response and high sensitivity over a wide pressure range. The micropillars undergo three stages of deformation upon loading: initial contact (0–6 kPa) and structure buckling (6–12 kPa) that exhibit a low and nonlinear response, as well as a post-buckling stage that has a high signal linearity with high sensitivity (33.16 kPa−1) over a broad pressure range of 12–176 kPa. The high linearity lies in the subtle balance between the structure compression and mechanical matching of the two materials at the gel-electrode interface. Our sensor has been applied in pulse detection, plantar pressure mapping, and grasp task of an artificial limb. This work provides a physical insight in achieving linear response through the design of appropriate microstructures and selection of materials with suitable modulus in flexible pressure sensors, which are potentially useful in intelligent robots and health monitoring. © 2021 Science China Press
关键词	Flexible pressure sensor Iontronic interface Linearity Mechanical matching
英文关键词	Capacitive sensors; Electrodes; Intelligent robots; Machine design; Microstructure; Electronic skin; Flexible pressure sensors; High sensitivity; Iontronic interface; Linear response; Linearity; Mechanical matching; Pressure ranges; Pressure response; Range-based; Pressure sensors
语种	英语
来源期刊	Science Bulletin
文献类型	期刊论文
条目标识符	http://gcip.llas.ac.cn/handle/2XKMVOVA/207514
作者单位	Department of Materials Science and Engineering, Southern University of Science and Technology, Shenzhen, 518055, China; Academy for Advanced Interdisciplinary Studies, Southern University of Science and Technology, Shenzhen, 518055, China; Ningbo Fengcheng Advanced Energy Materials Research Institute, Ningbo, 315500, China; Tencent Robotics X, Shenzhen, 518000, China; Centers for Mechanical Engineering Research and Education at MIT and SUSTech & Shenzhen Engineering Research Center for Novel Electronic Information Materials and Devices, Southern University of Science and Technology, Shenzhen, 518055, China
推荐引用方式 GB/T 7714	Lu P.,Wang L.,Zhu P.,et al. Iontronic pressure sensor with high sensitivity and linear response over a wide pressure range based on soft micropillared electrodes[J],2021,66(11).
APA	Lu P..,Wang L..,Zhu P..,Huang J..,Wang Y..,...&Guo C.F..(2021).Iontronic pressure sensor with high sensitivity and linear response over a wide pressure range based on soft micropillared electrodes.Science Bulletin,66(11).
MLA	Lu P.,et al."Iontronic pressure sensor with high sensitivity and linear response over a wide pressure range based on soft micropillared electrodes".Science Bulletin 66.11(2021).