Inkjet Printing of Silver Nanowires for Stretchable\nHeaters

Abstract

Inkjet\nprinting is a promising technique for large-scale printed\nflexible and stretchable electronics. However, inkjet printing of\nsilver nanowires (AgNWs) still presents many challenges. In this study,\ninkjet printing of high-concentration AgNW ink on flexible substrates\nis demonstrated, and liquid polydimethylsiloxane (PDMS) is then spin-coated\non top of the printed AgNWs patterns to form stretchable conductors.\nWe analyzed the relationship between the surface microstructure and\nelectrical property of the stretchable AgNW conductors during various\nstretching/releasing cycles. Three consecutive stages of the resistance\nchange, including conditioning, equilibrium, and rising stages, can\nbe observed as a result of the morphology change. We also have demonstrated\nthat the inkjet-printed stretchable AgNW conductor can be used as\na stretchable heater. All of these characteristics indicate the excellent\npotential of inkjet printing of AgNWs for developing large-area flexible\nand stretchable electronics.