Lee Hyun-Yong | Institute for Materials Research, Tohoku University, Katahira, Sendai 980-8577, Japan

Department Of Electronic Materials Engineering Kwangwoon University

Institute For Materials Research Tohoku University

Department Of Electronic Materials Eng. Kwangwoon University

Institute for Materials Research, Tohoku University, Katahira, Sendai 980-8577, Japan

Department of Electronic Materials Engineering, Kwangwoon University, Seoul 139-701, Korea

Department of Biotechnology, College of Engineering, Daegu University, Gyeongbuk 712-714, Republic of Korea