Open AccessParticle plasmon resonances in L-shaped gold nanoparticles
Author(s) -
Hannu Husu,
Jouni Mäkitalo,
Janne Laukkanen,
Markku Kuittinen,
Martti Kauranen
Publication year - 2010
Publication title -
optics express
Language(s) - Uncategorized
Resource type - Journals
SCImago Journal Rank - 1.394
H-Index - 271
ISSN - 1094-4087
DOI - 10.1364/oe.18.016601
Subject(s) - plasmon , surface plasmon resonance , particle (ecology) , resonance (particle physics) , optics , electric field , nanoparticle , localized surface plasmon , wavelength , materials science , surface plasmon , molecular physics , physics , condensed matter physics , atomic physics , nanotechnology , quantum mechanics , oceanography , geology
We present an extensive experimental and theoretical study of the particle plasmon resonances of L-shaped gold nanoparticles. For the small characteristic size of the particles, we observe more higher-order resonances than previously from related shapes, and show that a short-wavelength resonance arises from the particle arm width and is not the suggested volume plasmon. We interpret the resonances through the local vector electric field in the structure and by fully taking into account the particle symmetry.