1. Mork Family Department of Chemical Engineering and Materials Science, University of Southern California, Los Angeles, California 90089, United States
2. Ming Hsieh Department of Electrical Engineering, University of Southern California, Los Angeles, California 90089, United States
3. School of Materials Science and Engineering, University of New South Wales, Sydney, NSW 2052, Australia
4. Department of Mechanical and Aerospace Engineering, University of Virginia, Charlottesville, Virginia 22904, United States
5. HORIBA Instruments Inc., Piscataway, New Jersey 08854, United States
6. Center for Integrated Nanotechnologies (CINT), Materials Physics and Applications Division, Los Alamos National Laboratory, Los Alamos, New Mexico 87545, United States
7. HORIBA Instruments Inc., Novato, California 94949, United States
8. Department of Materials Science and Engineering, University of Virginia, Charlottesville, Virginia 22904, United States
9. Department of Physics, University of Virginia, Charlottesville, Virginia 22904, United States
10. Core Center of Excellence in Nano Imaging, University of Southern California, Los Angeles, California 90089, United States