title: ZnO nanowires by pulsed laser vaporization: synthesis and properties.
abstract: We report a new pulsed-laser vaporization (PLV) technique to synthesize nanowires of single-crystal ZnO having a wurtzite structure by using colloidal gold nanoparticles as seeding catalysts. The average diameter of the nanowires is approximately 13 nm, with a very narrow range of 7 to 25 nm. The nanowires are straight for the most part, with the axes parallel to the [0001] growth direction. Raman and photoluminescence spectra from the nanowires and bulk ZnO are similar except for a approximately 510 nm band in the nanowires due to oxygen vacancies. The bulk-like vibrational and electronic properties of the nanowires is due to the diameter being larger than the threshold below which quantum confinement-induced effects are expected.
authors.affiliation: Materials Science and Engineering Department, Rensselaer Polytechnic Institute, Troy, NY 12180, USA.
authors.forename: P G
authors.initials: PG
authors.lastname: Ganesan
authors.forename: K
authors.initials: K
authors.lastname: McGuire
authors.forename: H
authors.initials: H
authors.lastname: Kim
authors.forename: N
authors.initials: N
authors.lastname: Gothard
authors.forename: S
authors.initials: S
authors.lastname: Mohan
authors.forename: A M
authors.initials: AM
authors.lastname: Rao
authors.forename: G
authors.initials: G
authors.lastname: Ramanath
mesh_terms: D003460:Crystallization; D007834:Lasers; D008027:Light; D008422:Materials Testing; D008855:Microscopy, Electron, Scanning; D046529:Microscopy, Electron, Transmission; D036103:Nanotechnology / Q000379:methods*; D043942:Nanotubes / Q000737:chemistry / Q000648:ultrastructure*; D010100:Oxygen / Q000737:chemistry; D010316:Particle Size; D013053:Spectrophotometry; D013059:Spectrum Analysis, Raman / Q000379:methods*; D013499:Surface Properties; D014961:X-Ray Diffraction; D015032:Zinc / Q000737:chemistry; D015034:Zinc Oxide / Q000737:chemistry*
chemical_list: D015032:Zinc; D010100:Oxygen; D015034:Zinc Oxide