Перегляд за автором "Stogniy, N. P."

Зараз показано 1 - 2 з 2
  • Зображення мініатюри
    Публікація
    Modeling of transients in cylinder with time varying plasma
    (IRE, 2010) Stogniy, N. P.; Sakhnenko, N. K.
    Therefore accurate time domain modeling for investigation of electromagnetic field with time-varying plasma is of great importance. In this paper we investigate the transformation of the incident wave due to change of plasma frequency in the cylinder. The main interest is in the transient response, evaluation of the transition time and the transformed diffraction pattern in the steady state regime. The solution is obtained in a robust mathematical manner. For this we apply the Laplace transform directly to the wave equation and include the initial conditions that involve continuity of the electric field displacement and its derivative at zero moment of time. We generate the analytical solution in the Laplace transform domain in the form of the eigenfunctions expansion that satisfies the boundary conditions requiring continuity of the tangential components of the electric and magnetic field. We obtain the inversion of the image function by virtue of the evaluation of the residues in singular points and integrals along branch cuts of the complex plane.
  • Зображення мініатюри
    Публікація
    Plane wave scattering on chain of silver nanowires
    (ФНТ, 2011) Stogniy, N. P.; Sakhnenko, N. K.
    The problem of electromagnetic interaction of two or more closely spaced nanoparticles is of great importance. Such configurations give rise to tunable spectral shifts of the plasmon bands and to exceptionally strong field enhancements. Indeed, the general interest in this field has strongly increased in recent years as improved nanofabrication methods now allow advanced control of nanoparticle shape and arrangement patterns of particle ensembles. In this paper we consider H-polarized plane wave scattering on a linear chain of N identical infinite-long silver cylindrical nanowires. The main goal is to investigate the plasmon resonances of the structure. The Mie series expansion is used to derive the solution. For the refractive index value we use the experimental data obtained by Jonson and Christie for bulk silver.