1. Department of Electrical and Computer Engineering, University of Illinois at Chicago, Chicago, Illinois 60607, United States
2. Department of Chemistry, University of Chicago, Chicago, Illinois 60637, United States
3. The James Franck Institute, University of Chicago, Chicago, Illinois 60637, United States
4. The Institute of Biophysical Dynamics, Chicago, Illinois 60637, United States
5. Physics Department, University of Illinois at Chicago, Chicago, Illinois 60607, United States
6. Richard and Loan Hill Department of Biomedical Engineering, University of Illinois at Chicago, Chicago, Illinois 60607, United States