1. Chemical and Petroleum Engineering,
and Physics, University of Pittsburgh,
Pittsburgh, Pennsylvania 15261, United States
2. The Ames Laboratory (U.S. Department of Energy), Ames, Iowa 50011, United States
3. Materials Science and Engineering,
and Chemical and Biological Engineering, Iowa State University, Ames, Iowa 50011, United States
4. Mechanical Engineering and Materials
Science, University of Pittsburgh, Pittsburgh,
Pennsylvania 15261, United States
5. Materials Research Laboratory,
and Chemistry, University of Illinois at Urbana−Champaign, Urbana, Illinois 61801, United States
6. Physics, Yeshiva University,
New York, New York 10016, United States
7. Center for Research on Heath
Care Data Center, University of Pittsburgh, Pittsburgh, Pennsylvania 15213, United States
8. Center for Functional Nanomaterials, Brookhaven National Laboratory, Upton, New York 11973,
United States
9. National
Center for Electron
Microscopy, Lawrence Berkeley National Laboratory, Berkeley, California 94720, United States