Myeong-Lok Seol1,2, Jin-Woo Han1,2, Dong-Il Moon1,2, Kyung Jean Yoon1,3, Cheol Seong Hwang3, M. Meyyappan1
1Center for Nanotechnology, NASA Ames Research Center, Moffett Field, CA 94035 USA
2Universities Space Research Association, NASA Ames Research Center, Moffett Field, CA 94035, USA
3Department of Materials Science and Engineering, and Inter-University Semiconductor Research Center, Seoul National University, Seoul 151-744, Republic of Korea