Anisotropic surface plasmon excitation in Au/silica nanowire | Zendy

Chien-Ting Wu | Zendy; MingWen Chu | Zendy; Shengbo Wang | Zendy; Ming-Shien Hu | Zendy; KueiHsien Chen | Zendy; LiChyong Chen | Zendy; ChunWei Chen | Zendy; ChengHsuan Chen | Zendy

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Anisotropic surface plasmon excitation in Au/silica nanowire

Author(s) -

Chien-Ting Wu,

MingWen Chu,

Shengbo Wang,

Ming-Shien Hu,

KueiHsien Chen,

LiChyong Chen,

ChunWei Chen,

ChengHsuan Chen

Publication year - 2010

Publication title -

applied physics letters

Language(s) - English

Resource type - Journals

SCImago Journal Rank - 1.182

H-Index - 442

eISSN - 1077-3118

pISSN - 0003-6951

DOI - 10.1063/1.3456529

Subject(s) - nanowire , photoconductivity , materials science , surface plasmon , surface plasmon resonance , plasmon , anisotropy , transmission electron microscopy , excitation , localized surface plasmon , scanning electron microscope , spectroscopy , polarization (electrochemistry) , optoelectronics , charge carrier , molecular physics , optics , chemistry , nanotechnology , nanoparticle , physics , quantum mechanics , composite material

The surface plasmon (SP) excitations of gold/silica nanowire, investigated by electron energy-loss spectroscopy in conjunction with scanning transmission electron microscopy, are found to be anisotropic with stronger SP intensities observed along the transverse direction of the nanowire. This indicates that the charge carriers generated near the surface of the nanowires by the decay of SP resonance play a significant role to the enhanced photoconductivity. This conclusion is reaffirmed by the polarization dependent photoconductivity measurement.

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