1. Laboratory of Nanomechanics, Institute of Mechanics of Lomonosov Moscow State University, Michurinskyi Avenue 1, Moscow 119192, Russia
2. Department of Mathematics and Mechanics, Lomonosov Moscow State University, Leninskye Gory 1, Moscow 119991, Russia
3. Mechanical Engineering Research Institute of the Russian Academy of Sciences, Maly Kharitonyevsky Pereulok 4, Moscow 101990, Russia