1. Department of NanoEngineering, University of California San Diego, 9500 Gilman Drive, La Jolla, California 92093, United States
2. UC San Diego Material Engineering Research and Education Center, University of California San Diego, 9500 Gilman Drive, La Jolla, California 92093, United States
3. Materials Science and Engineering Program, University of California San Diego, 9500 Gilman Drive, La Jolla, California 92093, United States
4. ARC Centre of Excellence in Convergent Bio-Nano Science and Technology, and the Department of Chemical Engineering, The University of Melbourne, Parkville, Victoria 3010, Australia
5. California Institute for Telecommunications and Information Technology, University of California San Diego, 9500 Gilman Drive, La Jolla, California 92093, United States
6. Sustainable Power and Energy Center, University of California San Diego, 9500 Gilman Drive, La Jolla, California 92093, United States
7. Department of Radiology, University of California San Diego, 9500 Gilman Drive, La Jolla, California 92093, United States