1. a Laboratory of Adhesion & Bio-Composites, Program in Environmental Materials Science, Seoul National University, Seoul 151-921, Republic of Korea
2. b Department of Material Science and Engineering, State University of New York at Stony Brook, Stony Brook, New York 11794-2275, USA
3. c Laboratory of Adhesion & Bio-Composites, Program in Environmental Materials Science, Seoul National University, Seoul 151-921, Republic of Korea
4. d Laboratory of Adhesion & Bio-Composites, Program in Environmental Materials Science, Seoul National University, Seoul 151-921, Republic of Korea, Department of Material Science and Engineering, State University of New York at Stony Brook, Stony Brook, New York 11794-2275, USA;, Email: hjokim@snu.ac.kr
5. e Department of Material Science and Engineering, State University of New York at Stony Brook, Stony Brook, New York 11794-2275, USA
6. f Department of Material Science and Engineering, State University of New York at Stony Brook, Stony Brook, New York 11794-2275, USA