1. Center
for Individual Nanoparticle Functionality, Department of Physics, Technical University of Denmark (DTU), Kongens Lyngby, Denmark
2. Department
of Chemistry, Stanford University, Stanford, California 94305, United States
3. Materials
Science Division, Lawrence Livermore National Laboratory, Livermore, California 94550, United States
4. Materials
Engineering Division, Lawrence Livermore National Laboratory, Livermore, California 94550, United States