Highly stretchable liquid-metal based strain sensor with high sensitivity for human activity monitoring

Wang，Shawn L.1; Xu，Xinwei2; Han，Zhubing3; Li，He3; Wang，Qing3; Yao，Bin3,4

2021

10.1016/j.matlet.2021.131277

MATERIALS LETTERS   影响因子和分区

0167-577X

1873-4979

Sensors with high sensitivity, a wide detection range, large stretchability and skin-like elastic compliance are highly desirable for biomedical applications. Liquid metal (LM)-based composites, characterized by being highly stretchable and mechanically compatible to biological tissues, have great potential for stretchable wearable sensors, but they are limited to relatively small resistive changes with the applied stretch. Here we report a highly stretchable, conformable and highly sensitive strain sensor fabricated by inserting putty-like conductive mixture composed of SiO microspheres and LM into elastomer microchannels. The introduction of the SiO microspheres effectively improves the sensitivity of the sensor while retaining the desirable mechanical properties. The capture of various human activities, such as different states of mouth, finger, hand and elbow, has been demonstrated by using the prepared sensor and a wireless sensory system.

Electronic materials Flexible electronics Liquid metal Sensors

SCI ; EI

英语

其他

Materials Science ; Physics

Materials Science, Multidisciplinary ; Physics, Applied

WOS:000729309800002

ELSEVIER

20214711188573

Flexible electronics ; Medical applications ; Microspheres ; Silica ; Silicon ; Wearable sensors

Metallurgy:531.1 ; Nonferrous Metals and Alloys excluding Alkali and Alkaline Earth Metals:549.3 ; Electronic Equipment, General Purpose and Industrial:715

MATERIALS SCIENCE

2-s2.0-85119203615

Scopus

1.Episcopal Academy,Newtown Square,19073,United States
2.Department of Materials Science and Engineering,Southern University of Science and Technology,Shenzhen,518055,China
3.Department of Materials Science and Engineering,The Pennsylvania State University,University Park,16802,United States
4.School of Aerospace Science and Technology,Xidian University,Xi'an,710071,China

Wang，Shawn L.,Xu，Xinwei,Han，Zhubing,et al. Highly stretchable liquid-metal based strain sensor with high sensitivity for human activity monitoring[J]. MATERIALS LETTERS,2021,308.

Wang，Shawn L.,Xu，Xinwei,Han，Zhubing,Li，He,Wang，Qing,&Yao，Bin.(2021).Highly stretchable liquid-metal based strain sensor with high sensitivity for human activity monitoring.MATERIALS LETTERS,308.

Wang，Shawn L.,et al."Highly stretchable liquid-metal based strain sensor with high sensitivity for human activity monitoring".MATERIALS LETTERS 308(2021).