title: Facile fabrication of silver nanoclusters as promising surface-enhanced Raman scattering substrates.
abstract: We present a simple wet chemical method to make thin film of silver nanoclusters on glass or silicon substrate. The method includes immersion of glass or silicon substrate into a saturated solution of silver nitrate in n-octanol. After 24 h, thin film of silver nanoclusters, which are micrometer-scale aggregates of silver nanoparticles with average size in the range of 80-100 nm, are formed on the substrate. The film is characterized by X-ray diffraction, scanning electron microscopy, atomic force microscopy, X-ray photoelectron spectroscopy, and UV-Vis spectroscopy. Potential use of the Ag nanoclusters as a surface-enhanced Raman scattering based sensing platform is demonstrated by measuring increased Raman signals from organic molecule adsorbed on the Ag nanoparticle clusters.
authors.forename: Lok Kumar
authors.initials: LK
authors.lastname: Shrestha
authors.forename: Jung-Sub
authors.initials: JS
authors.lastname: Wi
authors.forename: Jesse
authors.initials: J
authors.lastname: Williams
authors.forename: Misaho
authors.initials: M
authors.lastname: Akada
authors.forename: Katsuhiko
authors.initials: K
authors.lastname: Ariga
mesh_terms: D020003:1-Octanol / Q000737:chemistry; D000327:Adsorption; D053768:Metal Nanoparticles / Q000737:chemistry*; D018625:Microscopy, Atomic Force; D056951:Photoelectron Spectroscopy; D012235:Rhodamines / Q000737:chemistry; D012834:Silver / Q000737:chemistry*; D012835:Silver Nitrate / Q000737:chemistry; D013056:Spectrophotometry, Ultraviolet; D013059:Spectrum Analysis, Raman / Q000295:instrumentation*; D013499:Surface Properties; D013997:Time Factors; D014961:X-Ray Diffraction
chemical_list: D012235:Rhodamines; C026188:rhodamine 6G; D012834:Silver; D012835:Silver Nitrate; D020003:1-Octanol