Tailorable and Flexible Conducting Films via Interfacial Modification of Polymer Fibers

摘要

Portable devices have become lightweight,flexible,and even stretchable such that skin-like electronics are widely applicable,including in biomedical devices,soft robotics,and human/machine interfaces.Rendering these devices soft and flexible is highly desirable,as this would enable them to interact seamlessly with human skin and improve their wearing comfort.We demonstrate a convenient but effective method to fabricate flexible conducting films.These films consist of electrospun polyurethane (PU) fibers as the flexible substrate onto which copper was deposited.These Cu-PU films have excellent conductivity,and their resistance only increases slightly after extensive folding,even when folded into a paper crane with a resistance of 1.8 Ω.Furthermore,Cu-PU films can sense tension strength and exhibit stable Joule electrothermal performance.The Cu-PU-based heating glove could be heated to 40℃ in 30 s by applying 2 V.The simple but effective procedure presented here is suitable to fabricate flexible conducting film and may also promote the development of portable and flexible electronic products.