title: Improved SERS performance from Au nanopillar arrays by abridging the pillar tip spacing by Ag sputtering.
abstract: Ag-capped Au nanopillar arrays on a resin supporter (see left upper figure), with a typical adjacent pillar tip gap of 10 nm, show obviously higher surface-enhanced Raman scattering (SERS) sensitivity (right column in red) than that of the bare Au nanopillar array while using 10 nM R6G as probe molecules. The large-area Ag-capped Au nanopillar array has potential in trace detection of special chemicals.
authors.affiliation: Institute of Solid State Physics, Chinese Academy of Sciences, Hefei, PR China.
authors.forename: Zhulin
authors.initials: Z
authors.lastname: Huang
authors.forename: Guowen
authors.initials: G
authors.lastname: Meng
authors.forename: Qing
authors.initials: Q
authors.lastname: Huang
authors.forename: Yajun
authors.initials: Y
authors.lastname: Yang
authors.forename: Chuhong
authors.initials: C
authors.lastname: Zhu
authors.forename: Chaolong
authors.initials: C
authors.lastname: Tang
mesh_terms: D000537:Aluminum Oxide / Q000737:chemistry; D006046:Gold / Q000737:chemistry*; D053768:Metal Nanoparticles / Q000737:chemistry* / Q000648:ultrastructure; D011078:Polychlorinated Biphenyls / Q000032:analysis; D012834:Silver / Q000737:chemistry*; D013059:Spectrum Analysis, Raman / Q000379:methods*
chemical_list: D012834:Silver; D006046:Gold; D011078:Polychlorinated Biphenyls; D000537:Aluminum Oxide