1. Department of Micro- and Nanotechnology, Technical University of Denmark, Kgs. Lyngby, Denmark
2. Centre for Microtechnology
and
Surface Analysis, Danish Technological Institute, Taastrup, Denmark
3. School of Materials Engineering
and Birck Nanotechnology Center, Purdue University, West Lafayette, Indiana, United States
4. Center for Individual Nanoparticle
Functionality (CINF), Technical University of Denmark, Kgs. Lyngby, Denmark
5. IBM T. J. Watson Research Center, Yorktown Heights, New York, United
States