1. Meinig School of Biomedical Engineering Cornell University Ithaca NY 14853 USA
2. Department of Chemistry and Chemical Biology Cornell University Ithaca NY 14853 USA
3. Department of Materials Science and Engineering Cornell University Ithaca NY 14853 USA
4. Department of Structural Biology Weizmann Institute of Science Rehovot 7610001 Israel
5. Division of Nutritional Sciences Cornell University Ithaca NY 14853 USA
6. Department of Applied and Engineering Physics Cornell University Ithaca NY 14853 USA
7. Sibley School of Mechanical and Aerospace Engineering Cornell University Ithaca NY 14853 USA
8. Biotechnology Resource Center Imaging Facility Cornell University Ithaca NY 14853 USA
9. Kavli Institute at Cornell for Nanoscale Science Cornell University Ithaca NY 14853 USA