1. Department of Chemistry & Biochemistry and California NanoSystems Institute, University of California, Los Angeles, 607 Charles E. Young Drive East, Los Angeles, California 90095-1569, United States
2. Fibron Technologies, Inc. 419 Hindry Ave., Suite E Inglewood, California 90301, United States
3. Mechanical and Aerospace Engineering, Henry Samueli School of Engineering and Applied Science, University of California, Los Angeles, 48-121 Engineering IV, 420 Westwood Plaza, Los Angeles, California 90095-1569, United States
4. Department of Materials Science and Engineering, University of California, Los Angeles, 405 Hilgard Avenue, Los Angeles, California 90095, United States
5. Department of Mechanical Engineering, University of California, Riverside, 900 University Avenue, Riverside, California 92521, United States