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Soft and Deformable Sensors Based on Liquid Metals

by Taeyeong Kim 1,2,†, Dong-min Kim 1,2,†, Bong Jae Lee 1,2,* and Jungchul Lee 1,2,*
1
Department of Mechanical Engineering, Korea Advanced Institute of Science and Technology, Daejeon 34141, Korea
2
Center for Extreme Thermal Physics and Manufacturing, Korea Advanced Institute of Science and Technology, Daejeon 34141, Korea
*
Authors to whom correspondence should be addressed.
These authors equally contributed to this work.
Sensors 2019, 19(19), 4250; https://doi.org/10.3390/s19194250
Received: 11 September 2019 / Revised: 24 September 2019 / Accepted: 27 September 2019 / Published: 30 September 2019
(This article belongs to the Special Issue Wearable Soft Sensors)
Liquid metals are one of the most interesting and promising materials due to their electrical, fluidic, and thermophysical properties. With the aid of their exceptional deformable natures, liquid metals are now considered to be electrically conductive materials for sensors and actuators, major constituent transducers in soft robotics, that can experience and withstand significant levels of mechanical deformation. For the upcoming era of wearable electronics and soft robotics, we would like to offer an up-to-date overview of liquid metal-based soft (thus significantly deformable) sensors mainly but not limited to researchers in relevant fields. This paper will thoroughly highlight and critically review recent literature on design, fabrication, characterization, and application of liquid metal devices and suggest scientific and engineering routes towards liquid metal sensing devices of tomorrow. View Full-Text
Keywords: liquid metals; deformable sensors; flexible electronics; soft sensors liquid metals; deformable sensors; flexible electronics; soft sensors
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Kim, T.; Kim, D.-M.; Lee, B.J.; Lee, J. Soft and Deformable Sensors Based on Liquid Metals. Sensors 2019, 19, 4250.

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