Theoretical Simulation and Focused Ion Beam Fabrication of Gold Nanostructures For Surface-Enhanced Raman Scattering (SERS).

Published

Journal Article

This paper describes the fabrication of gold nanopillar and nanorod arrays and theoretical calculations of electromagnetic fields (EMFs) around ordered arrangements of these nanostructures. The EMFs of both single nanopillars and di-mers of nanopillars - having nanoscale gaps between the two adjacent nanopillars forming the di-mers - are simulated in this work by employing the Finite Difference Time Domain (FDTD) method. In the case of simulations for di-mers of nanopillars, the nano-scale gaps between the nanopillars are varied between 5 nm and 20 nm and calculations of the electromagnetic fields in the vicinity of the nanopillars and in the gaps between the nanopillars were carried out. Fabrication of gold nanopillars in a controlled manner for forming SERS substrates involves focused ion beam (FIB) milling. The nanostructures were fabricated on gold-coated silica, mica, and quartz planar substrates as well as on gold-coated tips of four mode and multimode silica optical fibers.

Full Text

Duke Authors

Cited Authors

  • Dhawan, A; Gerhold, M; Vo-Dinh, T

Published Date

  • December 2007

Published In

Volume / Issue

  • 3 / 3-4

Start / End Page

  • 164 - 171

PubMed ID

  • 23976888

Pubmed Central ID

  • 23976888

Electronic International Standard Serial Number (EISSN)

  • 1551-1294

International Standard Serial Number (ISSN)

  • 1551-1286

Digital Object Identifier (DOI)

  • 10.1007/s12030-008-9017-x

Language

  • eng