Main field of study: 011200 Physics
Area of specialization: Coherent Optics
Department of general physics I
Scientific advisor: Ph. D.  E.A.Efremova
Reviewer: Dr. A.S. Pulkin

Optical response of gold nanowires
A.	Borozdin

Since became possible to manufacture materials with metallic nanostructures, which linear size less than optical wave length, appears an opportunity to investigate light-matter interactions on the mesoscopic level, where plasmonic effects plays major role. Probably the most appealing aspect in this research field is the possibility to control the dispersive dielectric and magnetic properties by incorporating metallic nanostructures in dielectric host of composite material. 

In our work we investigate probability to descript composite media by multipole approach technique. We considered system, which consist of two metallic nanowires. We obtained that the electric quadrupole and magnetic dipole contributions have the same order of magnitude and both have to be taken into account. By introducing an empirical coupling constant, we prevent us from regarding the complex near-field interactions between the wires and that gave us a probability to descript analytically effective dielectric and magnetic constants. All theoretical treatments simulated on Comsol.