Liquid Metal-Based Reconfigurable and Repairable Electronics Designed by a Femtosecond Laser - Details

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Abstract：

Patterning　liquid　metal　(LM)　on　a　solid　surface　is　highly　required　for　flexible　electronics.　However,　a　simple　way　to　prepare　repairable　and　reconfigurable　LM　patterns　remains　a　challenge.　In　this　article,　we　pattern　porous　network　microstructures　on　a　poly(vinyl　alcohol)　(PVA)　surface　and　selectively　realize　＇super-metal-phobicity＇by　femtosecond　(fs)　laser　microfabrication.　The　untreated　area　shows　ultrahigh　adhesion　to　LM,　while　the　laser-ablated　area　presents　ultralow　adhesion.　After　being　brushed　over　the　whole　surface,　LM　can　be　selectively　wetted,　forming　repairable　circuits.　Besides,　by　controlling　the　width　of　the　microstructured　groove,　a　reconfigurable　patch　antenna　is　also　designed　and　achieved.　It　is　anticipated　that　the　fs　laser-induced　super-metal-phobic　surfaces　will　have　potential　applications　in　wearable　devices,　frequency-modulated　antennas,　and　reconfigurable　electronics.　Copyright　©　2020　American　Chemical　Society.

Keyword：

Adhesion Femtosecond lasers Flexible electronics Liquid metals Metals Microstrip antennas Microstructure Polyvinyl alcohols Slot antennas Wearable antennas

Author Community：

[ 1 ] [Zhang, Jingzhou]State Key Laboratory for Manufacturing System Engineering, Shaanxi Key Laboratory of Photonics Technology for Information, School of Electronic Science and Engineering, Faculty of Electronic and Information Engineering, Xi'An Jiaotong University, Xi'an; 710049, China
[ 2 ] [Yong, Jiale]State Key Laboratory for Manufacturing System Engineering, Shaanxi Key Laboratory of Photonics Technology for Information, School of Electronic Science and Engineering, Faculty of Electronic and Information Engineering, Xi'An Jiaotong University, Xi'an; 710049, China
[ 3 ] [Zhang, Chengjun]School of Mechanical Engineering, Xi'An Jiaotong University, Xi'an; 710049, China
[ 4 ] [Zhang, Keyue]School of Microelectronics, Faculty of Electronic and Information Engineering, Xi'An Jiaotong University, Xi'an; 710049, China
[ 5 ] [He, Yongning]School of Microelectronics, Faculty of Electronic and Information Engineering, Xi'An Jiaotong University, Xi'an; 710049, China
[ 6 ] [Yang, Qing]School of Mechanical Engineering, Xi'An Jiaotong University, Xi'an; 710049, China
[ 7 ] [Hou, Xun]State Key Laboratory for Manufacturing System Engineering, Shaanxi Key Laboratory of Photonics Technology for Information, School of Electronic Science and Engineering, Faculty of Electronic and Information Engineering, Xi'An Jiaotong University, Xi'an; 710049, China
[ 8 ] [Chen, Feng]State Key Laboratory for Manufacturing System Engineering, Shaanxi Key Laboratory of Photonics Technology for Information, School of Electronic Science and Engineering, Faculty of Electronic and Information Engineering, Xi'An Jiaotong University, Xi'an; 710049, China

Reprint Author's Address：

陈烽
[Chen, Feng]State Key Laboratory for Manufacturing System Engineering, Shaanxi Key Laboratory of Photonics Technology for Information, School of Electronic Science and Engineering, Faculty of Electronic and Information Engineering, Xi'An Jiaotong University, Xi'an; 710049, China;;

Email：

chenfeng@mail.xjtu.edu.cnemailyangqing@mail.xjtu.edu.cn) Yang, Qing(yangqing@mail.xjtu.edu.cn

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