1. Department of Biomedical Engineering, Center for Nano Bioengineering, R&D, Center for Membrane Technology, Chung Yuan Christian University, 200, Chung Pei Rd., Chung Li, Taiwan 32023, R.O.C.
2. Center for Nanoscience, Ludwig Maximilians University, Amalienstrasse 54, 80799 München, Germany
3. National Nanotechnology Laboratory (NNL) of CNR-LNFM, Universita delgi studi Lecce, Via per Arnesano Km 5, 73100 Lecce, Italy