1. IBM Almaden Research
Center, 650 Harry Road, San Jose, California 95120, United States
2. POLYMAT, University of the Basque Country UPV/EHU Joxe Mari Korta Center, Avda. Tolosa
72, 20018 Donostia-San
Sebastián, Spain
3. Institute of Bioengineering
and Nanotechnology, 31 Biopolis Way, Singapore 138669, Singapore
4. Department
of Chemical and Biomolecular Engineering, Carl R. Woese Institute
for Genomic Biology, University of Illinois at Urbana−Champaign, 600 South Mathews Avenue, Urbana, Illinois 61801, United States