1. Department of Materials Science and Engineering, University of Illinois at Urbana—Champaign, Urbana, Illinois 61801, United States
2. Holonyak Micro and Nanotechnology Laboratory, University of Illinois at Urbana—Champaign, Urbana, Illinois 61801, United States
3. Department of Bioengineering, University of Illinois at Urbana—Champaign, Urbana, Illinois 61801, United States
4. Cancer Center at Illinois, University of Illinois at Urbana—Champaign, Urbana, Illinois 61801, United States
5. Carl R. Woese Institute for Genomic Biology, University of Illinois at Urbana—Champaign, Urbana, Illinois 61801, United States