Size Effect on the Infrared Spectra of Condensed Media under Conditions of 1D, 2D, and 3D Dielectric Confinementстатья
Статья опубликована в высокорейтинговом журнале
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Дата последнего поиска статьи во внешних источниках: 17 мая 2016 г.
Аннотация:A general expression for the dielectric loss spectrum of an absorbing composite medium
was obtained from a Maxwell-Garnett general equation. This expression was simplified
for the cases of one, two and three dimensional dielectric confinement in both ordered
and disordered thin layers, rods (wires) and spheres of absorbing medium which are
considered as mesoparticles or mesoscopic molecules.
This theoretical approach was verified experimentally using high purity organic liquids
with strong absorption bands in the infrared range. Three organic liquids, namely
benzene, chloroform and carbon disulphide, were measured in various dielectric
confinement configurations using Fourier Transform Infrared (FTIR) spectroscopy with a
Grazing Angle attachment GATRTM. A significant shift of the resonant absorption band
of liquid mesoparticles was observed for various dielectric confinement geometries which
is in good agreement with theoretical predictions. Possible applications of this work
include investigations of industrial smoke, toxic aerosols and liquid droplets.