1. International Research and Education Center for Physics of Nanostructures, ITMO University, 49 Kronverksky pr, Saint Petersburg 197101, Russia
2. School of Optoelectronic Science and Engineering and Collaborative Innovation Center of Suzhou Nano Science and Technology, Soochow University, Suzhou 215006, P. R. China
3. Research Park, Saint Petersburg State University, 199034 Saint Petersburg, Russia
4. School of Physics and Engineering, ITMO University, Lomonosova 9, St. Petersburg 191002, Russia
5. Laboratory of Nano- and Microencapsulation of Biologically Active Substances, Peter the Great St. Petersburg Polytechnic University, Polytechnicheskaya 29, St. Petersburg 195251, Russia