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Title: Effect of surface scattering of electrons on ratios of optical absorption and scattering to extinction of gold nanoshell
Authors: Ye, Yiyang
Liu, Zhen
Yuan, Xu
Chen, Tu Pei
Keywords: DRNTU::Engineering::Electrical and electronic engineering
Surface scattering
Issue Date: 2018
Source: Ye, Y., Chen, T. P., Liu, Z., & Yuan, X. (2018). Effect of surface scattering of electrons on ratios of optical absorption and scattering to extinction of gold nanoshell. Nanoscale Research Letters, 13, 299-. doi:10.1186/s11671-018-2670-7
Series/Report no.: Nanoscale Research Letters
Abstract: Gold nanoshell’s high light scattering and absorption at its resonance wavelength have found applications in biomedical imaging and photothermal therapy. However, at nanoscale, metallic material’s dielectric function is affected by nanoparticle’s size, mainly via a mechanism called surface scattering of conduction electrons. In this work, the effect of surface scattering of electrons on the ratios of optical absorption and scattering to extinction (which is the sum of the absorption and scattering) of gold nanoshell is investigated. Simulation results for several shell thicknesses are compared. It is found that the electrons’ surface scattering increases the optical absorption ratio, and the thinner the shell thickness, the larger the increase in the difference of the absorption ratio between the situations with and without the surface scattering considered. The increase of absorption ratio is then verified by comparing simulation results to experimental measurements for three nanoshells. The parameters of the simulations to fit the experimental measurements show that the damping of conduction electrons in metallic shell geometry is larger than that predicted by the billiard scattering model.
ISSN: 1931-7573
DOI: 10.1186/s11671-018-2670-7
Rights: © 2018 The Author(s). This article is distributed under the terms of the Creative Commons Attribution 4.0 International License (, which permits unrestricted use, distribution, and reproduction in any medium, provided you give appropriate credit to the original author(s) and the source, provide a link to the Creative Commons license, and indicate if changes were made.
Fulltext Permission: open
Fulltext Availability: With Fulltext
Appears in Collections:EEE Journal Articles

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