title: Glass nanopillar arrays with nanogap-rich silver nanoislands for highly intense surface enhanced Raman scattering.
abstract: The enhancement of surface enhanced Raman scattering (SERS) with nanogap-rich silver nanoislands surrounding glass nanopillars at wafer level is reported. High-density hot spots are generated by increasing the number of nanogap-rich nanoislands within a detection volume. The SERS substrate shows a high enhancement factor of over 10(7)  with excellent signal uniformity (∼7.8%) and it enables the label-free detection of aqueous DNA base molecules at nanomolar level.
authors.affiliation: Department of Bio and Brain Engineering, KAIST Institute for Optical Science and Technology, Korea Advanced Institute of Science and Technology (KAIST), Yuseong-gu, Daejeon, Korea.
authors.forename: Young-Jae
authors.initials: YJ
authors.lastname: Oh
authors.forename: Ki-Hun
authors.initials: KH
authors.lastname: Jeong
mesh_terms: D004247:DNA / Q000737:chemistry; D005898:Glass; D049329:Nanostructures / Q000737:chemistry* / Q000648:ultrastructure; D036103:Nanotechnology; D012834:Silver / Q000737:chemistry*; D013059:Spectrum Analysis, Raman
chemical_list: D012834:Silver; D004247:DNA