Affiliation: | (1) Department of Mechanical Engineering, Ajou University, San 5, Wonchon-dong, Yeongtong-gu, 443-749 Suwon, Korea, Republic of (South Korea);(2) Department of Mechanical Engineering, University of California at Berkeley, 5104 Etcheverry Hall, Mailstop 1740, 94720 Berkeley, USA |