1. Cavendish Laboratory, University of Cambridge, JJ Thomson Avenue, Cambridge CB3 0HE, United Kingdom
2. Department of Chemical Engineering, Hanbat National University, San 16-1, Duckmyoung-dong Yuseong-gu, Daejeon 305-719, Republic of Korea
3. Polyera Corporation, 8045 Lamon Avenue, Skokie, Illinois 60077