1. Department
of Nano- and Biomedical Technologies, Saratov State University, Astrakhanskaya 83, 410012 Saratov, Russia
2. Department
of Molecular Biotechnology, Ghent University, Coupure Links 653, 9000 Gent, Belgium
3. Photonics
Research Group, INTEC Department, Ghent University - imec, Technologiepark
15, 9052 Zwijnaarde, Belgium
4. National
Research Center, Kurchatov Institute, Akademika Kurchatova pl., 1, 123182 Moscow, Russia
5. Moscow Institute of Physics and Technology, Institutsky lane 9, Dolgoprudny, 141700 Moscow region, Russia
6. A.V.
Shubnikov Institute of Crystallography, Russian Academy of Science, Leninskiy prospect, 59, 119333 Moscow, Russia
7. School of
Engineering and Materials Science, Queen Mary University of London, Mile End Road, London, E1 4NS, U.K.