Semi‐Liquid‐Metal‐(Ni‐EGaIn)‐Based Ultraconformable Electronic Tattoo

• DOI: 10.1002/admt.201900183
• Publication Date: 2019-05-22T17:15:18Z
• Authors: Rui Guo; Xuyang Sun; Siyuan Yao; Minghui Duan; Hongzhang Wang; Jing Liu; Zhongshan Deng
• Keywords: Electronic Skin; Electronic component; Liquid metal; Electronic materials

Abstract Because of its seamless skin interface, electronic has attracted increasing attention in the field biomedical sensors and medical devices. Most skins are based on organic or inorganic materials. However, low flexibility materials limited conductivity restricts their widespread use. A new approach is reported to fabricate tattoos from Ni‐EGaIn, which high (1.61 × 10 6 S m −1 ) human‐skin compliance. This time‐effective low‐cost method mainly adhesion selectivity semi‐liquid metal (Ni‐EGaIn) polymethacrylate glue. Light‐emitting diode arrays, temperature sensors, heaters, surface electrodes successfully printed onto skin, function monitoring, diagnosis, treatment demonstrated. Moreover, a human–machine interface fabricated using this technique fully bridge gap between human an circuit. novel strategy not only provides ultraconformable for use biomedicine but also represents path towards personal customization