1. School of Life Science and Technology, Harbin Institute of Technology, Harbin 150080, P. R. China
2. School of Chemical and Environmental Engineering, Harbin University of Science and Technology, Harbin 150040, P. R. China
3. Key Laboratory of Micro-systems and Micro-structures Manufacturing, Ministry of Education, Harbin Institute of Technology, Harbin 150080, P. R. China