Ultraviolet nanoplasmonics: a demonstration of surface-enhanced Raman spectroscopy, fluorescence, and photodegradation using gallium nanoparticles.

Journal Article

Self-assembled arrays of hemispherical gallium nanoparticles deposited by molecular beam epitaxy on a sapphire support are explored as a new type of substrate for ultraviolet plasmonics. Spin-casting a 5 nm film of crystal violet upon these nanoparticles permitted the demonstration of surface-enhanced Raman spectra, fluorescence, and degradation following excitation by a HeCd laser operating at 325 nm. Measured local Raman enhancement factors exceeding 10(7) demonstrate the potential of gallium nanoparticle arrays for plasmonically enhanced ultraviolet detection and remediation.

Full Text

Duke Authors

Cited Authors

  • Yang, Y; Callahan, JM; Kim, TH; Brown, AS; Everitt, HO

Published Date

  • June 12, 2013

Published In

Volume / Issue

  • 13 / 6

Start / End Page

  • 2837 - 2841

PubMed ID

  • 23659187

Electronic International Standard Serial Number (EISSN)

  • 1530-6992

Digital Object Identifier (DOI)

  • 10.1021/nl401145j


  • eng

Conference Location

  • United States