1. Optical Materials
Engineering
Laboratory, ETH Zurich, 8092 Zurich, Switzerland
2. Department of Chemical Engineering
and Materials Science, University of Minnesota, Minneapolis, Minnesota 55455, United States
3. Department of Chemical Engineering, Soongsil University, Seoul 156-743, Korea
4. Nanoparticle Process Technology
and Center for NanoIntegration Duisburg-Essen (CeNIDE), University Duisburg-Essen, D-47057 Duisburg, Germany
5. Department of Chemistry, University of Minnesota, Minneapolis, Minnesota 55455,
United States