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Surface-enhanced Raman scattering on periodic metal nanotips with tunable sharpness.
Nanotechnology. 2009 Jun 03; 20(22):225303.N

Abstract

This paper reports on a scalable bottom-up technology for producing periodic gold nanotips with tunable sharpness as surface-enhanced Raman scattering (SERS) substrates. Inverted silicon pyramidal pits, which are templated from non-close-packed colloidal crystals prepared by a spin-coating technology, are used as structural templates to replicate arrays of polymer nanopyramids with nanoscale sharp tips. The deposition of a thin layer of gold on the polymer nanopyramids leads to the formation of SERS-active substrates with a high enhancement factor (up to 10(8)). The thickness of the deposited metal determines the sharpness of the nanotips and the resulting Raman enhancement factor. Finite-element electromagnetic modeling shows that the nanotips can significantly enhance the local electromagnetic field and the sharpness of nanotips greatly affects the SERS enhancement.

Links

Publisher Full Text (DOI)

Authors+Show Affiliations

Linn NC
Department of Chemical Engineering, University of Florida, Gainesville, FL 32611, USA.
Sun CH
No affiliation info available
Arya A
No affiliation info available
Jiang P
No affiliation info available
Jiang B
No affiliation info available

MeSH

AlgorithmsComputer SimulationElectromagnetic PhenomenaFinite Element AnalysisGoldMicroscopy, Atomic ForceMicroscopy, Electron, ScanningModels, TheoreticalNanostructuresSiliconSpectrum Analysis, RamanSurface Properties

Pub Type(s)

Journal Article
Research Support, Non-U.S. Gov't
Research Support, U.S. Gov't, Non-P.H.S.

Language

eng

PubMed ID

19433880

Citation

Linn, Nicholas C., et al. "Surface-enhanced Raman Scattering On Periodic Metal Nanotips With Tunable Sharpness." Nanotechnology, vol. 20, no. 22, 2009, p. 225303.
Linn NC, Sun CH, Arya A, et al. Surface-enhanced Raman scattering on periodic metal nanotips with tunable sharpness. Nanotechnology. 2009;20(22):225303.
Linn, N. C., Sun, C. H., Arya, A., Jiang, P., & Jiang, B. (2009). Surface-enhanced Raman scattering on periodic metal nanotips with tunable sharpness. Nanotechnology, 20(22), 225303. https://doi.org/10.1088/0957-4484/20/22/225303
Linn NC, et al. Surface-enhanced Raman Scattering On Periodic Metal Nanotips With Tunable Sharpness. Nanotechnology. 2009 Jun 3;20(22):225303. PubMed PMID: 19433880.
* Article titles in AMA citation format should be in sentence-case
TY - JOUR T1 - Surface-enhanced Raman scattering on periodic metal nanotips with tunable sharpness. AU - Linn,Nicholas C, AU - Sun,Chih-Hung, AU - Arya,Ajay, AU - Jiang,Peng, AU - Jiang,Bin, Y1 - 2009/05/12/ PY - 2009/5/13/entrez PY - 2009/5/13/pubmed PY - 2009/9/1/medline SP - 225303 EP - 225303 JF - Nanotechnology JO - Nanotechnology VL - 20 IS - 22 N2 - This paper reports on a scalable bottom-up technology for producing periodic gold nanotips with tunable sharpness as surface-enhanced Raman scattering (SERS) substrates. Inverted silicon pyramidal pits, which are templated from non-close-packed colloidal crystals prepared by a spin-coating technology, are used as structural templates to replicate arrays of polymer nanopyramids with nanoscale sharp tips. The deposition of a thin layer of gold on the polymer nanopyramids leads to the formation of SERS-active substrates with a high enhancement factor (up to 10(8)). The thickness of the deposited metal determines the sharpness of the nanotips and the resulting Raman enhancement factor. Finite-element electromagnetic modeling shows that the nanotips can significantly enhance the local electromagnetic field and the sharpness of nanotips greatly affects the SERS enhancement. SN - 1361-6528 UR - https://www.unboundmedicine.com/medline/citation/19433880/Surface_enhanced_Raman_scattering_on_periodic_metal_nanotips_with_tunable_sharpness_ L2 - https://doi.org/10.1088/0957-4484/20/22/225303 DB - PRIME DP - Unbound Medicine ER -