D Dr. Chigrin is an internationally recognized expert on different aspects of theoretical and computational physics of complex artificial systems. In particular PD Dr. Chigrin provides expertise in: the development of theoretical and numerical models of phase transition in Ge-Sb-Te phase change materials with applications for local switching of optical meta-surfaces and meta-materials; coupling of phase field models with thermal and electromagnetic solvers; design of reconfigurable meta-materials the non-equilibrium thermodynamics and elastodynamics of complex polymer networks, dynamic polymer networks and plasmonic nanoparticle polymer network composites; theoretical and numerical models of diffusion in porous media; applications to theoretical description of hydrogels; design and multi-physics simulations of hydrogel based micro-robotic systems the theoretical and numerical study of plasmon-polaritonic nano-structures; multi-physical description of photothermal and photoacoustic phenomena; applications to photoacoustic imaging; development of theoretical multi-physics description of nanoparticle synthesis in hydrogel matrix; applications to photocatalysis.