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