1. Key Laboratory for Advanced Materials and Institute of Fine Chemicals; School of Chemistry and Molecular Engineering; East China University of Science and Technology; Shanghai 200237 P. R. China
2. Division of Physical Biology & Bioimaging Center; Shanghai Institute of Applied Physics; Chinese Academy of Sciences; Shanghai 201800 P. R. China
3. State Key Laboratory of Bioreactor Engineering; East China University of Science and Technology; Shanghai 200237 P. R. China