1. Holonyak Micro and Nanotechnology Lab (HMNTL), University of Illinois at Urbana−Champaign, Champaign−Urbana 61801, United States
2. Zhejiang University-University of Illinois at Urbana−Champaign Institute, Haining, Zhejiang 314400, China
3. Department of Electrical and Computer Engineering, National University of Singapore, 117583 Singapore
4. Department of Electrical and Computer Engineering, University of California, San Diego 92161, United States
5. Department of Electrical and Computer Engineering, University of Illinois at Urbana−Champaign, Champaign−Urbana 61801, United States
6. Department of Bioengineering, University of Illinois at Urbana−Champaign, Champaign−Urbana 61801, United States
7. Department of Chemistry, University of Illinois at Urbana−Champaign, Champaign−Urbana 61801, United States
8. Carl R. Woese Institute for Genomic Biology, University of Illinois at Urbana−Champaign, Champaign−Urbana 61801, United States