title: Surface enhanced Raman scattering from porous gold nanofibers of different diameters.
abstract: Porous gold nanofibers of different diameters from 43 to 219 nm were fabricated using electrochemical deposition techniques. Gold-silver alloy were electrochemically deposited in the form of nanofibers within the porous alumina templates of various diameters and only a silver phase was chemically removed using nitric acid. Field-emission scanning electron microscope images of the resulting nanofibers show a high-quality nanoporous network with homogeneous pores. A notable surface-enhanced Raman scattering (SERS) has been observed for all porous gold nanofibers of which scattering efficiencies are distinctly higher than that of the smooth solid gold nanofibers without porosity. As the diameter of porous gold nanofibers decreases, the observed SERS efficiency gradually increases. Controlled fabrication of lateral width of gold nanofibers reveals promising application for high efficient and stable molecular sensing platforms.
authors: Gangneung Center Korea Basic Science Institute, Gangneung 210-702, Korea.
authors: Hee-Ok
authors: HO
authors: Lee
authors: Weon-Sik
authors: WS
authors: Chae
authors: Jeong Won
authors: JW
authors: Kim
authors: Hyunung
authors: H
authors: Yu
mesh_terms: D000537:Aluminum Oxide / Q000737:chemistry; D006046:Gold / Q000737:chemistry*; D053768:Metal Nanoparticles / Q000737:chemistry / Q000648:ultrastructure*; D008855:Microscopy, Electron, Scanning; D015336:Molecular Probe Techniques; D057139:Nanofibers / Q000737:chemistry / Q000648:ultrastructure*; D036103:Nanotechnology / Q000379:methods*; D010316:Particle Size; D016062:Porosity; D013059:Spectrum Analysis, Raman
chemical_list: D006046:Gold; D000537:Aluminum Oxide