1. Materials
and Process Simulation Center, California Institute of Technology, 1200 East California Blvd., m/c 139-74, Pasadena, California 91125, United States
2. Department
of Chemical Engineering, California State University, Long Beach, California 90840, United States
3. Department
of Materials Science and Engineering, National Chiao Tung University, Hsin-Chu 300, Taiwan ROC