1. Institute of Nanoscience of Aragón (INA) and Laboratory of Advanced Microscopies (LMA), Universidad of Zaragoza, Zaragoza 50018, Spain
2. Departamento de Física de la Materia Condensada, Universidad de Zaragoza, Zaragoza 50009, Spain
3. Institute of Biochemistry and Physiology of Plants and Microorganisms, Russian Academy of Sciences, Saratov 410049, Russia
4. Faculty of Nano- and Biomedical Technologies, Saratov State University, Saratov 410012, Russia