title: Essential nanogap effects on surface-enhanced Raman scattering signals from closely spaced gold nanoparticles.
abstract: We have demonstrated the essential nanogap effects on surface-enhanced Raman scattering (SERS) signals obtained from two diagonally aligned gold nanoparticles with several nanometre separations, which were precisely fabricated on a glass substrate. This is the first proof of principle for extracting the light localization effects on SERS due to the formation of nanogaps from experimentally observed SERS signals.
authors.affiliation: Research Institute for Electronic Science, Hokkaido University, Sapporo 001-0021, Japan.
authors.forename: Yukie
authors.initials: Y
authors.lastname: Yokota
authors.forename: Kosei
authors.initials: K
authors.lastname: Ueno
authors.forename: Hiroaki
authors.initials: H
authors.lastname: Misawa
mesh_terms: D019281:Dimerization; D005898:Glass / Q000737:chemistry; D006046:Gold / Q000737:chemistry*; D053768:Metal Nanoparticles / Q000737:chemistry*; D013059:Spectrum Analysis, Raman / Q000379:methods*; D013499:Surface Properties
chemical_list: D006046:Gold