1. Physical
and Computational Sciences Directorate, Pacific Northwest National Laboratory, Richland, Washington 99354, United States
2. Department
of Materials Science and Engineering, North Carolina State University, Raleigh, North Carolina 27695, United States
3. Gatan Inc., Pleasanton, California 94588, United States
4. Environmental
and Molecular Sciences Laboratory, Pacific Northwest National Laboratory, Richland, Washington 99354, United States
5. Sandia National Laboratories, Albuquerque, New Mexico 87185, United States