Anisotropic light absorption by localized surface plasmon resonance in a thin film of gold nanoparticles studied by visible multiple-angle incidence resolution spectrometry

Akiyoshi Kasuya, Yuki Itoh, Tetsuo Okada, Masatoshi Osawa, Yukina Takahashi, Emiko Kazuma, Tetsu Tatsuma, Takeshi Hasegawa

研究成果: Contribution to journalArticle査読

8 被引用数 (Scopus)

抄録

Anisotropic light absorptions via localized surface plasmon resonance in a gold-evaporated film parallel (in-plane; IP) and perpendicular (out-of-plane; OP) to the film surface are studied using visible multiple-angle incidence resolution spectrometry (Vis-MAIRS). When the thin film was aged for eighteen days, the time-dependent Vis-MAIRS IP spectra exhibited significantly different variation from that of the OP spectra: the IP spectra exhibited a large shift to the shorter wavelength side, whereas the OP spectra were explained by a linear combination of three-constituent spectra. The surface topographical analysis of the film revealed that a continuous film coalesced to form aggregates of metal particles. The intrinsic difference between the IP and OP spectra was readily elucidated by considering the surface-parallel and -perpendicular dipoles interaction depending on the topographical changes, which was confirmed by performing spectral simulation using metal particle array models.

本文言語英語
ページ(範囲)9691-9696
ページ数6
ジャーナルPhysical Chemistry Chemical Physics
13
20
DOI
出版ステータス出版済み - 5 28 2011
外部発表はい

All Science Journal Classification (ASJC) codes

  • 物理学および天文学(全般)
  • 物理化学および理論化学

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