1. College of Materials Science and Engineering Shenzhen University Shenzhen 518055 P. R. China
2. Beijing Key Laboratory of Clothing Materials R&D and Assessments Beijing Engineering Research Center of Textile Nanofiber School of Materials Science and Engineering Beijing Institute of Fashion Technology Beijing 100029 P. R. China
3. National Center for Nanoscience and Technology of China Beijing 100190 P. R. China