1. Department of Physics, Broida Hall, University of California, Santa Barbara, Santa Barbara, California 93106, United
States
2. Materials Research Laboratory, Materials Department, Mitsubishi Chemical
Center for Advanced Materials, University of California Santa Barbara, Santa Barbara, California 93106, United
States
3. Materials Department, University of California Santa Barbara, Santa Barbara,
California 93106, United States
4. Polyera Corporation, Skokie, Illinois 60077, United States