The Effect of Local Field Dispersion on the Spectral Characteristics of Nanosized Particles and their Composites, G.S. Nicolić, Fourier Transforms Approach to Scientific Principles, Rijeka, Croatia, Intech, 2011, 405-426, Tatiana Perova, Igor Shaganov and Kevin Berwick
Infrared (IR) spectroscopy of micro- and nanosized particles and their composites is
currently one of the most important enabling technologies in the development of micro- and
nanostructures and their application to various areas of science and technology. Decreasing
the characteristic size of metallic, dielectric and semiconductor materials results in a
dramatic alteration to their optical, electrical and mechanical properties, allowing the
fabrication of new materials with unique physical properties (Lamberti, 2008; Cao, 2004).
These alterations in the optical properties are related to a quantum confinement effect, as
well as to a dielectric, or electrostatic, confinement effect (Cahay et al., 2001; Chemla &
Miller, 1986). The effect of quantum confinement is most pronounced in semiconductor
materials, where the transition from the bulk state to the microcrystalline state causes a
substantial change in the band structure and an enhancement of the non-linear electrooptical
properties. Dielectric, or polarisation, confinement has a wider impact, since it
influences the frequencies and intensities of absorption bands in the spectra of any
condensed matter, including crystalline and amorphous solids, as well as liquids. This is
because considerable changes in the polarisation of micro/nanoparticles occur, depending
on their form and orientation with respect to the external electromagnetic field and the
details of the spatial restriction.
Please note: There is a known bug in some browsers that causes an
error when a user tries to view large pdf file within the browser window.
If you receive the message "The file is damaged and could not be
repaired", please try one of the solutions linked below based on the
browser you are using.
Items in TARA are protected by copyright, with all rights reserved, unless otherwise indicated.