globalchange  > 气候变化与战略
DOI: 10.1016/j.scib.2021.02.019
论文题名:
Iontronic pressure sensor with high sensitivity and linear response over a wide pressure range based on soft micropillared electrodes
作者: 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.
刊名: Science Bulletin
ISSN: 20959273
出版年: 2021
卷: 66, 期:11
起始页码: 1091
结束页码: 1100
语种: 英语
中文关键词: 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
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
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资源类型: 期刊论文
标识符: http://119.78.100.158/handle/2HF3EXSE/170348
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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

Recommended Citation:
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]. Science Bulletin,2021-01-01,66(11)
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