Stretchable electronics is playing an integral role in fields such as wearable electronics and soft robots.Among soft conductive materials,liquid metal is drawing intense attention as an electrode material due to its ...Stretchable electronics is playing an integral role in fields such as wearable electronics and soft robots.Among soft conductive materials,liquid metal is drawing intense attention as an electrode material due to its liquid nature at room temperature.However,the merits of liquid metal conductor are limited by the presence of substrates or enclosed microchannels from physical disturbances by the underlying substrate when applying it to 3D surface and modifying complex circuit.To overcome this limitation,we develop freestanding patterned liquid metal thin-film conductor(FS-GaIn).FS-GaIn was achieved by introducing metal nanowires to liquid metal and subsequent sequential selective laser processing and etching of directly patterned traces.FSGaIn can be applied directly to nonflat surface without substrates.When incorporated into electrical circuits,FS-GaIn shows high electrical conductivity,stretchability,and stability.The concept of freestanding liquid metal can open a functionality to the conventional liquid metal electronics.展开更多
基金supported by the National Research Foundation of Korea (grant number 2021R1A2B5B03001691,2021M3H4A1A02050237).
文摘Stretchable electronics is playing an integral role in fields such as wearable electronics and soft robots.Among soft conductive materials,liquid metal is drawing intense attention as an electrode material due to its liquid nature at room temperature.However,the merits of liquid metal conductor are limited by the presence of substrates or enclosed microchannels from physical disturbances by the underlying substrate when applying it to 3D surface and modifying complex circuit.To overcome this limitation,we develop freestanding patterned liquid metal thin-film conductor(FS-GaIn).FS-GaIn was achieved by introducing metal nanowires to liquid metal and subsequent sequential selective laser processing and etching of directly patterned traces.FSGaIn can be applied directly to nonflat surface without substrates.When incorporated into electrical circuits,FS-GaIn shows high electrical conductivity,stretchability,and stability.The concept of freestanding liquid metal can open a functionality to the conventional liquid metal electronics.
