title: Laser-induced self-assembly of silver nanoparticles via plasmonic interactions.
abstract: We report laser induced self-assembly of silver nanoparticles via plasmonic interactions. By focusing a near-infrared laser in silver nanoparticle suspension, nanoparticle assembly is formed as a result of optical trapping. The shape of Rayleigh scattering spectra of the nanoassembly strongly depends on the polarization of the laser beam. Particularly, a linearly polarized laser induces the formation of arrayed structure along the laser polarization, that shows a sharp plasmon resonance band and harnesses excellent plasmonic properties applicable for nonlinear surface enhanced spectroscopy.
authors.affiliation: Department of Applied Physics, Osaka University, Suita, Osaka 565-0871, Japan.
authors.forename: Yoshito
authors.initials: Y
authors.lastname: Tanaka
authors.forename: Hiroyuki
authors.initials: H
authors.lastname: Yoshikawa
authors.forename: Tamitake
authors.initials: T
authors.lastname: Itoh
authors.forename: Mitsuru
authors.initials: M
authors.lastname: Ishikawa