Yu, Qiuming and Guan, Phillip and Qin, Dong and Golden, Greg and Wallace, Paul M. (2008) Inverted size-dependence of surface-enhanced Raman scattering on gold nanohole and nanodisk arrays. NANO LETTERS, 8 (7). pp. 1923-1928.
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Official URL: http://pubs.acs.org/doi/abs/10.1021/nl0806163
Surface-enhanced Raman scattering (SERS) on gold nanohole and nanodisk arrays with precisely controlled size and spacing fabricated via electron beam lithography was investigated. These nanostructures exhibit strong SERS signals at 785 nm excitation but not at 514 nm. When the edge-to-edge distance is maintained, enhancement increases for nanoholes but decreases for nanodisks as diameter is increased. It is shown that the observed enhancement results from the local surface plasmon resonance wavelength shifts to the near-infrared regime as nanohole diameter increases. The large tolerance on dimensions and the empty space confined by nanoholes suggest promise for their use as a functional component in sensing, spectroscopy, and photonic devices.
|Subjects:||Analytical Science > Microscopy and probe methods|
Analytical Science > Nanotechnology for sensing and actuating
Material Science > Nanostructured materials
Physical Science > Photonics
|Deposited By:||Farnush Anwar|
|Deposited On:||16 Dec 2008 16:59|
|Last Modified:||12 Jan 2009 10:11|
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