Highly Stretchable and Transparent Electromagnetic Interference Shielding Film Based on Silver Nanowire Percolation Network for Wearable Electronics Applications

Abstract

Future electronics are expected to develop into wearable forms, and an adequate stretchability is required for the forthcoming wearable electronics considering various motions occurring in human body. Along with stretchability, transparency can increase both the functionality and esthetic features in future wearable electronics. In this study, we demonstrate, for the first time, a highly stretchable and transparent electromagnetic interference shielding layer for wearable electronic applications with silver nanowire percolation network on elastic poly(dimethylsiloxane) substrate. The proposed stretchable and transparent electromagnetic interference shielding layer shows a high electromagnetic wave shielding effectiveness even under a high tensile strain condition. It is expected for the silver nanowire percolation network-based electromagnetic interference shielding layer to be beyond the conventional electromagnetic interference shielding materials and to broaden its application range to various fields that require optical transparency or nonplanar surface environment, such as biological system, human skin, and wearable electronics.

Ultrathin flexible graphene films with high thermal conductivity and excellent EMI shielding performance using large-sized graphene oxide flakes

“…5d). 1,4,5,11,13,19,20,28,31,32,[35][36][37][38][39][40][41][42][43][44][45][46][47][48][49][50][51] This nding is noteworthy because the LG-4 lm would satisfy several commercial requirements for an EMI shielding material, for example ultrahigh EMI SE (73.7 dB), low density (2.05 g cm À3 ), ultrathin thickness (0.014 mm), anti-corrosion, high exibility and easy fabrication.…”

A Deformable and Highly Robust Ethyl Cellulose Transparent Conductor with a Scalable Silver Nanowires Bundle Micromesh

“…Transparent conductors (TCs) for the next generation of optoelectronic devices should be mechanically deformable in addition to being highly conductive and transparent with low haze, in order to meet mass adoption for numerous applications such as light emitting diode (LED), solar cells, smart windows, displays, electronic paper devices, etc. Silver nanowires (AgNWs) possess optoelectronic advantages with low‐cost manufacturing, and have been proposed for applications in touch‐screen displays, photovoltaic devices, electrochromics, and transparent or stretchable functional devices, such as PM2.5 filter, heater, photodetector, supercapacitor, strain sensor, and electromagnetic shields, leading the way for indium‐tin oxide (ITO) replacement. However, many problems still remain unresolved for the conventional random AgNWs network with high junction resistance, including the delicate balance between optical and electrical properties due to the strong optical absorption of high carrier concentrations, as well as the poor adhesion of conductive layer to substrate .…”

Lightweight silver@carbon microsphere@graphene (Ag@CMS@GR) composite materials for highly efficiency electromagnetic interference shielding properties

“…Conventional metal shielding materials have several disadvantages, including poor flexibility, high density, expensive cost, and unsatisfactory corrosion resistance. Metal‐base shielding materials such as metal–polymer composites, metal‐foam, metal‐film, have greater flexibility to improve the shortcomings of traditional materials. For example, Byeon et al .…”

“…The EMI shielding performance of composite papers reached ∼48.6 dB at 1 GHz with the loading of 0.53 vol % AgNWs only. Therefore, doping metal materials into polymer is an effective way to improve the EMI shielding properties without sacrificing other properties of the matrix materials …”