1. College of Chemical Engineering, Guangdong University of Petrochemical Technology, Maoming, Guangdong, China
2. Department of Fiber Science and Apparel Design, Cornell University, Ithaca, NY, USA
3. Department of Electrical Engineering, The Hong Kong Polytechnic University, Hung Hom, Kowloon, Hong Kong, China
4. Department of Applied Physics and Materials Research Centre, The Hong Kong Polytechnic University, Hung Hom, Kowloon, Hong Kong, China
5. Institute of Textiles and Clothing, The Hong Kong Polytechnic University, Hung Hom, Kowloon, Hong Kong, China