Aluminum for plasmonics.

Published

Journal Article

Unlike silver and gold, aluminum has material properties that enable strong plasmon resonances spanning much of the visible region of the spectrum and into the ultraviolet. This extended response, combined with its natural abundance, low cost, and amenability to manufacturing processes, makes aluminum a highly promising material for commercial applications. Fabricating Al-based nanostructures whose optical properties correspond with theoretical predictions, however, can be a challenge. In this work, the Al plasmon resonance is observed to be remarkably sensitive to the presence of oxide within the metal. For Al nanodisks, we observe that the energy of the plasmon resonance is determined by, and serves as an optical reporter of, the percentage of oxide present within the Al. This understanding paves the way toward the use of aluminum as a low-cost plasmonic material with properties and potential applications similar to those of the coinage metals.

Full Text

Duke Authors

Cited Authors

  • Knight, MW; King, NS; Liu, L; Everitt, HO; Nordlander, P; Halas, NJ

Published Date

  • January 2014

Published In

Volume / Issue

  • 8 / 1

Start / End Page

  • 834 - 840

PubMed ID

  • 24274662

Pubmed Central ID

  • 24274662

Electronic International Standard Serial Number (EISSN)

  • 1936-086X

International Standard Serial Number (ISSN)

  • 1936-0851

Digital Object Identifier (DOI)

  • 10.1021/nn405495q

Language

  • eng