منابع مشابه
Surface effects on bulk plasmons.
We discuss the effects of surfaces on bulk plasma oscillations in a metallic film of thickness L. The leading corrections to the plasma frequencies due to the surfaces are proportional to L−1. The frequencies of low-lying long wavelength modes are given by the dispersion relation of bulk modes, ω = ωp[1 + α(q 2/k2 F )], where the allowed q-values are q(n) = (nπ/L), L ≡ L− 2db, and db is a compl...
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Light transmission and electric field enhancement are calculated for a cylindrical aperture in a silver slab resting on a glass substrate. We find that these properties are influenced significantly by the presence of the substrate. The results suggest that variations in the local dielectric alter the properties of localized surface plasmons that drive the field enhancement and transmission. 200...
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Excitation and manipulation of surface plasmons (SPs) are essential in developing cutting-edge plasmonic devices for medical diagnostics, biochemical spectroscopy and communications. The most common approach involves designing an array of periodic slits or grating apertures that enables coupling of the incident light to the SP modes. In recent years, plasmonic resonances, including extraordinar...
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ژورنال
عنوان ژورنال: Physical Review B
سال: 1993
ISSN: 0163-1829,1095-3795
DOI: 10.1103/physrevb.48.12240