1. Department of Chemistry and Biochemistry University of California 1156 High Street Santa Cruz CA 95064 USA
2. Lawrence Livermore National Laboratory 7000 East Avenue Livermore CA 94550 USA
3. Department of Mechanical Engineering Shanghai Jiao Tong University 800 Dongchuan Road Shanghai 200240 P. R. China
4. School of Engineering University of California Merced, 5200 North Lake Road Merced CA 95343 USA