Affiliation: | 1. Department of Chemistry/Biochemistry, California NanoSystems Institute, University of California Los Angeles, 607 Charles?E. Young Drive?E, Los Angeles, CA, 90095 (USA), Fax: (+1)?310 267 4672;2. Department of Physics, Applied Laser Physics, Bielefeld University, Universit?tsstrasse 25, 33615 Bielefeld (Germany);3. Department of Biotechnology and Biophysics, Julius‐Maximilians‐Universit?t Würzburg, Am Hubland, 97074 Würzburg (Germany) |