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How an oxide shell affects the ultraviolet plasmonic behavior of Ga, Mg, and Al nanostructures

Abstract: The ultraviolet (UV) range presents new challenges for plasmonics, with interesting applications ranging from engineering to biology. In previous research, gallium, aluminum, and magnesium were found to be very promising UV plasmonic metals. However, a native oxide shell surrounds nanostructures of these metals that affects their plasmonic response. Here, through a nanoparticle-oxide core-shell model, we present a detailed electromagnetic analysis of how oxidation alters the UV-plasmonic response of spherical or hemisphere-on-substrate nanostructures made of those metals by analyzing the spectral evolution of two parameters: the absorption efficiency (far-field analysis) and the enhancement of the local intensity averaged over the nanoparticle surface (near-field analysis).

Otras publicaciones de la misma revista o congreso con autores/as de la Universidad de Cantabria

 Fuente: Optics Express Vol. 24, Issue 18, pp. 20621-20631 (2016)

Editorial: The Optical Society (OSA)

 Año de publicación: 2016

Nº de páginas: 11

Tipo de publicación: Artículo de Revista

 DOI: 10.1364/OE.24.020621

ISSN: 1094-4087

 Proyecto español: MICINN FIS2013-45854-P

Url de la publicación: https://doi.org/10.1364/OE.24.020621