Direct observation of low frequency confined acoustic phonons in silver nanoparticles: Terahertz time domain spectroscopy

Kumar, Sunil and Kamaraju, N and Karthikeyan, B and Tondusson, M and Freysz, E and Sood, AK (2010) Direct observation of low frequency confined acoustic phonons in silver nanoparticles: Terahertz time domain spectroscopy. In: Journal of Chemical Physics, 133 (1). 014502-014505.

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Abstract

Terahertz time domain spectroscopy has been used to study low frequency confined acoustic phonons of silver nanoparticles embedded in poly (vinyl alcohol) matrix in the spectral range of 0.1-2.5 THz. The real and imaginary parts of the dielectric function show two bands at 0.60 and 2.12 THz attributed to the spheroidal and toroidal modes of silver nanoparticles, thus demonstrating the usefulness of terahertz time domain spectroscopy as a complementary technique to Raman spectroscopy in characterizing the nanoparticles. (C) 2010 American Institute of Physics. [doi:10.1063/1.3456372]

Item Type:	Journal Article
Publication:	Journal of Chemical Physics
Publisher:	American Institute of Physics
Additional Information:	Copyright of this article belongs to American Institute of Physics.
Department/Centre:	Division of Physical & Mathematical Sciences > Physics
Date Deposited:	02 Aug 2010 09:17
Last Modified:	28 Nov 2018 15:14
URI:	http://eprints.iisc.ac.in/id/eprint/31086

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