1. CMI, Debye Institute for Nanomaterials
Science, Utrecht University, P O. Box 80
000, 3508 TA Utrecht, The Netherlands
2. Department of Physics
and Astronomy, University of Canterbury, Private Bag 4800, Christchurch 8020, New Zealand
3. University of Applied Sciences Münster, 48565 Steinfurt, Germany
4. Philips Research Europe-Eindhoven, High Tech Campus 4, 5656 AE Eindhoven,
The Netherlands
5. Centre
for Optical and Electromagnetic
Research, Zhejiang University, Hangzhou
310058, China