1. The Wallace
H. Coulter Department
of Biomedical Engineering, Georgia Institute of Technology and Emory University, Atlanta, Georgia 30332, United
States
2. State Key Laboratory
of Bioelectronics,
School of Chemistry and Chemical Engineering, Southeast University, Nanjing 210096, P. R. China
3. School of Chemistry and Biochemistry,
School of Chemical and Biomolecular Engineering, Georgia Institute of Technology, Atlanta, Georgia 30332, United
States
4. Hefei National Laboratory
for
Physical Sciences at the Microscale and Department of Chemical Physics, University of Science and Technology of China, Hefei,
Anhui 230026, P. R. China
5. Department of Physics, Arizona State University, Tempe, Arizona 85287, United
States