其他名称：
25-29-00437
项目负责人：
Tatmyshevskiy Mikhail
发表日期：
2025
主持机构：
Moscow Institute of Physics and Technology,
国家：
俄罗斯
开始日期：
2025
结束日期：
2026
简介：
One of the main tasks of the current day photonics is the development of new materials and devices for controlling light on the nanoscale. In particular, the field of nanophotonics is developing rapidly, using exclusively dielectric nanoparticles, in which light is controlled by excitation of magnetic and electric Mie resonances. Possible applications of such structures include nanoantennas, lenses, topological insulators, ideal reflectors, as well as for amplifying non-linear effects, in spectroscopy, solar panels, etc. At the same time, unlike plasmonic structures made of metals, nanophotonics devices are much less prone to dissipative losses and are also relatively easier to manufacture. At the moment, materials such as silicon and germanium are mainly used in nanophotonics, but the use of materials with anisotropic optical properties looks very promising. Among all such materials, the class of transition metal dichalcogenides (TMD) stands out, exhibiting strongly anisotropic optical properties due to their layered structure.
In this project, it is planned to obtain metasurfaces consisting of semiconductor nanoparticles and supporting resonant excitation of quasi-locked modes due to the bianisotropic optical properties of nanoparticles. In the case of bianisotropy, the electric or magnetic polarizability tensor of nanoparticles has off-diagonal elements that correspond to the interaction of particles with the electric and magnetic fields of an external wave. This means, in particular, that the electric and magnetic dipole moments of particles can be excited by both electric and magnetic fields. Owing to the off-diagonal elements of the polarizability tensor, it is possible for a vertically incident (i.e., in-plane polarized) light wave to excite components of the particle dipole moments that are perpendicular to the surface. If the process of excitation of the normal component of the field is resonant in nature, when a metasurface is composed of these particles, resonant excitation of quasi-locked modes occurs in it, which are characterized by a strong normal component of the electric or magnetic field.
专业领域：
材料科学
语种：
英语
