1. Department
of Materials Science and Engineering, University of California—Davis, Davis, California 95616, United States
2. Department
of Electronics and Telecommunications, Norwegian University of Science and Technology, NO-7491 Trondheim, Norway
3. Advanced
Light Source, Lawrence Berkeley National Laboratory, Berkeley, California 94703, United States
4. Center
for Nanophase Materials Sciences, Oak Ridge National Laboratory, Oak Ridge, Tennessee 37831, United States