Chandra, Manabendra ; Das, Puspendu K. (2009) Size dependence and dispersion behavior of the first hyperpolarizability of copper nanoparticles Chemical Physics Letters, 476 (1-3). pp. 62-64. ISSN 0009-2614
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Official URL: http://linkinghub.elsevier.com/retrieve/pii/S00092...
Related URL: http://dx.doi.org/10.1016/j.cplett.2009.05.073
Abstract
We have probed the size dependency of the first hyperpolarizability (β) 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 (λ). 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 β values of copper nanoparticles owing to the presence of the strong surface plasmon resonance (SPR) band.
| Item Type: | Article |
|---|---|
| Source: | Copyright of this article belongs to Elsevier Science. |
| ID Code: | 10080 |
| Deposited On: | 02 Nov 2010 09:52 |
| Last Modified: | 30 May 2011 10:00 |
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