1. State Key Laboratory for Modification of Chemical Fibers and Polymer Materials; College of Materials Science and Engineering; Donghua University; Shanghai 201620 China
2. Center of Super-Diamond and Advanced Films (COSDAF); Department of Physics and Materials Science; City University of Hong Kong; Hong Kong
3. National Institute for Materials Science (NIMS); 1-1 Namiki Tsukuba, Ibaraki 305-0044 Japan