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A Photowelding Strategy for Conductivity Restoration in Flexible Circuits
Author(s) -
Sun Yunyu,
Yang Mingcheng,
Guo Yutong,
Cheng Mengjiao,
Dong Bin,
Shi Feng
Publication year - 2020
Publication title -
angewandte chemie international edition
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 5.831
H-Index - 550
eISSN - 1521-3773
pISSN - 1433-7851
DOI - 10.1002/anie.201909965
Subject(s) - conductivity , photocatalysis , materials science , nanotechnology , electrical conductor , electronic circuit , suspension (topology) , osmosis , optoelectronics , chemical engineering , composite material , membrane , chemistry , electrical engineering , engineering , catalysis , biochemistry , mathematics , homotopy , pure mathematics
Light‐driven micropumps, which are based on electro‐osmosis with the electric field generated by photocatalytic reactions, are among most attractive research topics in chemical micromotors. Until now, research in this field has mainly been focused on the directional motion or collective behavior of microparticles, which lack practical applications. In this study, we have developed a photowelding strategy for repeated photoinduced conductivity recovery of cracked flexible circuits. We immersed the circuit in a suspension of conductive healing particles and applied photoillumination to the crack; photocatalysis of a predeposited pentacene (PEN) layer triggered electro‐osmotic effects to gather conductive particles at the crack, thus leading to conductivity recovery of the circuit. This photowelding strategy is a novel application of light‐driven micropumps and photocatalysis for conductivity restoration.