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. 2014 Apr 22;9(1):187. doi: 10.1186/1556-276X-9-187

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Copyright © 2014 Yong et al.; licensee Springer.

This is an Open Access article distributed under the terms of the Creative Commons Attribution License (http://creativecommons.org/licenses/by/4.0), which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly credited.

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Extinction characteristics of a gold nanorod in water (n = 1.33). (a) The configuration of the numerical modeling. (b) Simulated extinction spectra of the gold nanorod for different incident angles θ; the extinction value in the left panel is normalized to the quadrupole peak for θ = 45°, and in the right panel to the dipole peak for θ = 0° (with a scale 3.36 times larger than the left panel). Curves are plotted with offset for clarity. (c) Angle-dependent peak extinction for the dipole, quadrupole, and sextupole resonance modes, normalized to the maximum values of each mode.