Size dependence and dispersion behavior of the first hyperpolarizability of copper nanoparticles

Chandra, Manabendra and Das, Puspendu K (2009) Size dependence and dispersion behavior of the first hyperpolarizability of copper nanoparticles. In: Chemical Physics Letters, 476 (1-3). pp. 62-64.

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Abstract

We have probed the size dependency of the first hyperpolarizability (b) of copper nanoparticles by hyper-Rayleigh scattering (HRS). Our results indicate that second harmonic generation (SHG) originates predominantly at the surface of the nanoparticles as long as the size (d) remains small compared to the wavelength (k). However, volume contribution to the SH response due to the retardation effect becomes important when particle size grows beyond the `small particle limit'. There is a significant dispersion in the b values of copper nanoparticles owing tothe presence of the strong surface plasmon resonance (SPR) band.

Item Type:	Journal Article
Publication:	Chemical Physics Letters
Publisher:	Elsevier Science
Additional Information:	Copyright of this article belongs to Elsevier Science.
Department/Centre:	Division of Chemical Sciences > Inorganic & Physical Chemistry
Date Deposited:	01 Jan 2010 11:46
Last Modified:	19 Sep 2010 05:38
URI:	http://eprints.iisc.ac.in/id/eprint/21661

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