1. Department of Materials Engineering and Convergence Technology and RIGECT, Gyeongsang National University, 900 Gazwadong, Jinju, Gyeongnam 660-701, Republic of Korea
2. Department of Energy and Mechanical Engineering and Institute of Marine Industry, Gyeongsang National University, No. 38, Cheondaegukchi-gil, Tongyeong, Gyenognam 650-160, Korea