Open AccessПоглощение электромагнитного излучения аморфным углеродом, модифицированным металлами
Author(s) -
С.Г. Ястребов,
И.Е. Истомин,
Mahi R. Singh
Publication year - 2021
Publication title -
pisʹma v žurnal tehničeskoj fiziki
Language(s) - English
Resource type - Journals
eISSN - 1726-7471
pISSN - 0320-0116
DOI - 10.21883/pjtf.2021.02.50539.18531
Subject(s) - discrete dipole approximation , scattering , electromagnetic radiation , absorption (acoustics) , carbon nanotube , dipole , materials science , amorphous solid , computational physics , anisotropy , radiation , physics , optics , condensed matter physics , molecular physics , nanotechnology , chemistry , quantum mechanics , crystallography
This article presents a theoretical study of the scattering and absorption of an electromagnetic wave from the gigahertz to the red range for a model of amorphous carbon modified by metals. On the basis of structural studies of this material, a cylindrical anisotropic nanoparticle - a nanotube responsible for its absorbing and antireflection properties - was selected as a candidate. A model of such a particle was developed and the scattering and absorption cross sections of an electromagnetic wave were calculated within the framework of the theory of the discrete dipole approximation. A pair of nanotubes allowed us to explain the contribution of the interaction of immediate neighbors to scattering and absorption. The constructed model explains the effect of absorption of radio-frequency electromagnetic radiation, observed experimentally in amorphous carbon modified with metals.