1. Department of Bioengineering, University of Illinois at Urbana-Champaign, Urbana, Illinois, USA.
2. Nick Holonyak Jr. Micro and Nanotechnology Laboratory, University of Illinois at Urbana-Champaign, Urbana, Illinois, USA.
3. HPCBio, Roy J. Carver Biotechnology Center, University of Illinois at Urbana-Champaign, Urbana, Illinois, USA.