1. Department of Electronic EngineeringInstitute for Wearable Convergence ElectronicsKyung Hee University 1732 Deogyeong‐daero, Gihung‐guYongin‐si Gyeonggi‐do 17104 Republic of Korea
2. Department of Chemical EngineeringCollege of EngineeringKyung Hee University 1732 Deogyeong‐daero, Gihung‐guYongin‐si Gyeonggi‐do 17104 Republic of Korea