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Published on: August 18, 2018
Self-Healing Flexible Conductive Film by Repairing Defects via Flowable Liquid Metal Droplets
Ruiwen Niu1,2, Mingliang Jin3,4, Jieping Cao5,6
1National Center for International Research on Green Optoelectronics, South China Normal University, Guangzhou 510006, China. niuruiwen@m.scnu.edu.cn.
Abstract:
Self-healing flexible conductive films have been fabricated, evaluated, and applied. The film is composed of a fragile indium tin oxide (ITO) layer covered with sprayed liquid metal (LM) droplets. Self-healing of electrical conductivity is achieved via spontaneous capillary wicking of LM droplets into cracks/defects of the ITO film. The liquid metal adhering onto the ITO layer can also connect the ITO fragments during bending to keep the overall conductivity of the composite LM/ITO film stable. Stable and reversible electrowetting performance has been achieved with the composite LM/ITO as the conductive film, in either flat or curved states.
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