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김현석(Hyeonseok Kim),홍석준(Sukjoon Hong),이하범(Habeom Lee),문현진(Hyunjin Moon),권진형(Jinhyeong Kwon),김동관(Dongkwan Kim),고승환(Seung Hwan Ko) 대한기계학회 2015 대한기계학회 춘추학술대회 Vol.2015 No.11
We introduce a highly stretchable and transparent electrical heater intended for future wearable applications by constructing a partially embedded silver nanowire percolative network on an elastic substrate. The Ag NW network heater proposed in this study not only exhibits superior optical transmittance and electrical conductivity comparable to ITO, but also outstanding electrical, mechanical and thermal stability withstanding 60 % strain at a temperature of 60 ℃ with high reliability and fast temporal response. The outstanding performance of Ag NW as a stretchable and transparent heater is attributed to the unique microscopic morphology of the Ag NW at the interface, which also enables easy manipulation of its spatial temperature profile through direct patterning of the Ag NW by a selective laser ablation process. The stable operation of Ag NW network heater on human wrists under real-time compressive/tensile strain, bending and twisting further proves its high potential for lightweight, biocompatible and versatile wearable applications.