1. Center for Biophysics and Quantitative Biology, University of Illinois at Urbana─Champaign, Urbana, Illinois 61801, United States
2. Beckman Institute for Advanced Science and Technology, University of Illinois at Urbana─Champaign, Urbana, Illinois 61801, United States
3. Department of Chemistry, University of Massachusetts at Amherst, Amherst, Massachusetts 01003, United States
4. Department of Electrical and Computer Engineering, University of Illinois at Urbana─Champaign, Urbana, Illinois 61801, United States
5. Department of Electrical Engineering, Stanford University, Stanford, California 94305, United States
6. Roy J. Carver Biotechnology Center, University of Illinois at Urbana─Champaign, Urbana, Illinois 61801, United States
7. Department of Physics, University of Illinois at Urbana─Champaign, Urbana, Illinois 61801, United States
8. Department of Materials Science and Engineering, University of Illinois at Urbana─Champaign, Urbana, Illinois 61801, United States
9. Department of Chemical and Biomolecular Engineering, University of Illinois at Urbana─Champaign, Urbana, Illinois 61801, United States