材料科学
可穿戴计算机
电子皮肤
流体学
电极
基质(水族馆)
光电子学
纳米技术
复合材料
电容感应
软机器人
电气工程
计算机科学
执行机构
化学
海洋学
物理化学
地质学
嵌入式系统
工程类
作者
Sihyun Kim,Masato Saito,Yuwen Wei,Priyanuj Bhuyan,Minjae Choe,Toshinori Fujie,Kunal Mondal,Sungjune Park
标识
DOI:10.1016/j.sna.2023.114317
摘要
Wearable electronic devices (WEDs) are receiving significant attention because of the increasing interest in soft robotics, electronic skin, and wearable sensors. Liquid metals (LMs) are compelling for WEDs owing to their metallic conductivity, fluidic nature, and low toxicity. Herein, we fabricated stretchable and soft WEDs using LM (eutectic gallium-indium alloy) wires (LMWs) patterned via force wetting through custom-made stencils on an elastic substrate. LMWs can generate thermal energy via Joule heating upon current application and deliver it to the substrate, resulting in wearable polymeric heaters. The LM mixed with carbonyl iron particles (CIPs) can also be patterned while preserving fluidic behavior. The degree of thermal energy generated through the LMWs can be manipulated as a function of the CIP concentration in the LM and geometrical factors of the electrode patterns, i.e., width and length. An elastic film patterned with LMWs attached to the human body exhibits changes in the effective electrical resistance depending on applied strain, demonstrating potential as a wearable strain sensor. This LM utilized WED that can generate thermal energy upon current application through the LMWs and detect the bodily motion has significant potential for application in wearable thermotherapy, electronic skin, and soft sensors.
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