Creep-free polyelectrolyte elastomer for drift-free iontronic sensing

He, Yunfeng1; Cheng, Yu2; Yang, Canhui1; Guo, Chuan Fei2

2024-03-01

10.1038/s41563-024-01848-6

NATURE MATERIALS   影响因子和分区

1476-1122

1476-4660

["Artificial pressure sensors often use soft materials to achieve skin-like softness, but the viscoelastic creep of soft materials and the ion leakage, specifically for ionic conductors, cause signal drift and inaccurate measurement. Here we report drift-free iontronic sensing by designing and copolymerizing a leakage-free and creep-free polyelectrolyte elastomer containing two types of segments: charged segments having fixed cations to prevent ion leakage and neutral slippery segments with a high crosslink density for low creep. We show that an iontronic sensor using the polyelectrolyte elastomer barely drifts under an ultrahigh static pressure of 500 kPa (close to its Young's modulus), exhibits a drift rate two to three orders of magnitude lower than that of the sensors adopting conventional ionic conductors and enables steady and accurate control for robotic manipulation. Such drift-free iontronic sensing represents a step towards highly accurate sensing in robotics and beyond.","Conventional iontronic pressure sensors suffer from signal drift and inaccuracy owing to creep of soft materials and ion leakage. Here the authors report a leakage-free and creep-free polyelectrolyte-elastomer-based iontronic sensor that achieves a drift rate two to three orders of magnitude lower than those of conventional iontronic sensors."]

SCI ; EI

英语

第一 ; 通讯

The National Natural Science Foundation of China (nos. T2225017, 52073138), the Science Technology and Innovation Committee of Shenzhen Municipality (no. JCYJ20220530114810024), the Shenzhen Sci-Tech Fund (no. YTDPT20181011104007)[2023YFB3812500] ; National Key Research and Development Program of China["T2225017","12302212","52073138"] ; National Natural Science Foundation of China[ZDSYS20210623092005017] ; Science, Technology, and Innovation Commission of Shenzhen Municipality[JCYJ20220530114810024] ; Science Technology and Innovation Committee of Shenzhen Municipality[YTDPT20181011104007] ; Shenzhen Sci-Tech Fund[2021B1212040001]

Chemistry ; Materials Science ; Physics

Chemistry, Physical ; Materials Science, Multidisciplinary ; Physics, Applied ; Physics, Condensed Matter

WOS:001190141200004

NATURE PORTFOLIO

MATERIALS SCIENCE

Web of Science

1.Southern Univ Sci & Technol, Dept Mech & Aerosp Engn, Shenzhen Key Lab Soft Mech & Smart Mfg, Shenzhen, Peoples R China
2.Southern Univ Sci & Technol, Dept Mat Sci & Engn, Shenzhen, Peoples R China

He, Yunfeng,Cheng, Yu,Yang, Canhui,et al. Creep-free polyelectrolyte elastomer for drift-free iontronic sensing[J]. NATURE MATERIALS,2024.

He, Yunfeng,Cheng, Yu,Yang, Canhui,&Guo, Chuan Fei.(2024).Creep-free polyelectrolyte elastomer for drift-free iontronic sensing.NATURE MATERIALS.

He, Yunfeng,et al."Creep-free polyelectrolyte elastomer for drift-free iontronic sensing".NATURE MATERIALS (2024).