Congratualtion, Jung Jun!! Finally and finally Jung started a fisrt step walk. I am sure some starts early. But remember, the later becomes faster. I appreciate his patience and effort of hard working. I am sure the next one will be better and faster!
Title: Heat Dissipation of Transparent Graphene Defogger
Authors: Jung Jun Bae, Seong Chu Lim, Gang Hee Han, Eun Sung Kim, Seung Jin Chae, Ta Quang Huy, Nguyen Van Luan, and Young Hee Lee
Abstract: In spite of recent successful demonstration of flexible and transparent graphene heater, the underlying heat transfer mechanism has never been understood due to their complexity of the heating system. Here, we have fabricated graphene/glass defogger measured dynamic responses of the temperature as a function of input electrical power. Graphene/glass defogger revealed faster response time than Cr/glass defogger and furthermore the saturated temperature of graphene/glass defogger was higher than that of Cr/glass defogger at a given input electrical power. The observed dynamic response of the temperature was well fitted to the power balance model. The response time of graphene/glass defogger was faster by 44 % than Cr/glass defogger. The convective heat transfer coefficient of graphene was 12.4 x 10-4 W cm-2 oC-1, similar to that of glass (11.1 x 10-4 W cm-2 oC-1) but smaller than that of chromium (17.1 x 10-4 W cm-2 oC-1). We also found that the graphene-based system revealed the lowest convective heat transfer coefficient due to its ideal flat surface compared to its counterparts of carbon nanotubes (CNTs) and reduced graphene oxide (RGO)-based systems.