1. Department of Chemical and Biological Engineering; University at Buffalo, State University of New York; Buffalo NY 14260 USA
2. Department of Fiber and Composite Materials; Feng Chia University; No. 100 Wenhwa Road Taichung Taiwan 40724 ROC
3. Department of Chemical and Biomolecular Engineering; Johns Hopkins University; 3400 North Charles Street Baltimore MD 21218 USA