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

Published

Journal Article

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).

Full Text

Duke Authors

Cited Authors

  • Gutierrez, Y; Ortiz, D; Sanz, JM; Saiz, JM; Gonzalez, F; Everitt, HO; Moreno, F

Published Date

  • September 2016

Published In

Volume / Issue

  • 24 / 18

Start / End Page

  • 20621 - 20631

PubMed ID

  • 27607666

Pubmed Central ID

  • 27607666

Electronic International Standard Serial Number (EISSN)

  • 1094-4087

International Standard Serial Number (ISSN)

  • 1094-4087

Digital Object Identifier (DOI)

  • 10.1364/oe.24.020621

Language

  • eng