Please use this identifier to cite or link to this item: https://doi.org/24/245204
Title: Influence of plasmon destructive interferences on optical properties of gold planar quadrumers
Authors: Rahmani, M.
Tahmasebi, T.
Lin, Y.
Lukiyanchuk, B.
Liew, T.Y.F. 
Hong, M.H. 
Issue Date: 17-Jun-2011
Source: Rahmani, M.,Tahmasebi, T.,Lin, Y.,Lukiyanchuk, B.,Liew, T.Y.F.,Hong, M.H. (2011-06-17). Influence of plasmon destructive interferences on optical properties of gold planar quadrumers. Nanotechnology 22 (24) : -. ScholarBank@NUS Repository. https://doi.org/24/245204
Abstract: Arrays of planar symmetric gold quadrumers consisting of a central nano-disc surrounded by three similar nano-discs belonging to the D3h point group were designed and fabricated. Since the geometrical configuration of quadrumers is the same as planar trigonal molecules, nano-discs can play the roles of artificial atoms to study the coupling trends among them. The plasmonic properties of the nano-disc structures are investigated by reflection spectrum measurement and finite-difference time-domain calculation with good agreement. Plasmon interaction among the nano-discs is also studied via a mass-spring coupled oscillator model. A pronounced Fano resonance (FR) is observed for the fabricated nano-discs with inter-disk gaps of around 18nm during light irradiation at normal incidence. Although the obtained FR is independent of the excitation polarization, the near-field energy spatial distribution can be flexibly tuned by the polarization direction. This has potential applications in nano-lithography, optical switching and nonlinear spectroscopy. © 2011 IOP Publishing Ltd.
Source Title: Nanotechnology
URI: http://scholarbank.nus.edu.sg/handle/10635/82535
ISSN: 09574484
DOI: 24/245204
Appears in Collections:Staff Publications

Show full item record
Files in This Item:
There are no files associated with this item.

Page view(s)

24
checked on Feb 17, 2018

Google ScholarTM

Check

Altmetric


Items in DSpace are protected by copyright, with all rights reserved, unless otherwise indicated.