1 September 2008 Spectral bounds on plasmon resonances for Ag and Au prolate and oblate nanospheroids
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J. of Nanophotonics, 2(1), 029501 (2008). doi:10.1117/1.3001731
Abstract
Analytical expressions for the plasmon resonance frequencies of prolate and oblate spheroids and their dependence on ellipticity are derived, and approximate bounds on these frequencies established. These formulas may be useful in tuning the plasmon resonance within certain limits. With increasing aspect ratio, the prolate spheroid resonance is red shifted relative to a sphere with no lower limit under the assumptions of a Drude dispersion model. On the other hand, the oblate resonances are blue shifted as the spheroid becomes increasingly flat, but up to a limit.
Stephen John Norton, Tuan Vo Dinh, "Spectral bounds on plasmon resonances for Ag and Au prolate and oblate nanospheroids," Journal of Nanophotonics 2(1), 029501 (1 September 2008). http://dx.doi.org/10.1117/1.3001731
Submission: Received ; Accepted
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KEYWORDS
Plasmons

Gold

Silver

Dielectrics

Optical spheres

Particles

Data modeling

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