Affiliation: | 1. Department of Physics and Materials Science, City University of Hong Kong, 83 Tat Chee Avenue, Hong Kong SAR (China);2. Department of Applied Physics, The Hong Kong Polytechnic University, Hong Hum, Hong Kong SAR (China);3. Department of Biology and Chemistry, City University of Hong Kong, 83 Tat Chee Avenue, Hong Kong SAR (China) |