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Simulated Optical Properties of Gold Nanocubes and Nanobars by Discrete Dipole Approximation
Joint Authors
Alsawafta, Mohammed
Wahbeh, Mamoun
Truong, Vo-Van
Source
Issue
Vol. 2012, Issue 2012 (31 Dec. 2012), pp.1-9, 9 p.
Publisher
Hindawi Publishing Corporation
Publication Date
2012-01-11
Country of Publication
Egypt
No. of Pages
9
Main Subjects
Abstract EN
The absorption spectra for a gold nanocube and for a gold nanobar are calculated by using the Discrete Dipole Approximation (DDA).
The results show the excitation of a single albeit broad surface plasmon (SP) band of the gold nanocube.
The extinction cross section of the gold nanocube is dominated by the absorption cross section that gains importance as the width increases.
Further increasing the nanocube size beyond 80 nm will result in an optical response mainly characterized by scattering properties.
The absorption spectrum of the nanobar shows the excitation of both the longitudinal mode (LM) and the transverse mode (TM).
The nanobar is also compared to a cylinder, a spherically capped cylinder, and a spheroid of the same aspect ratio.
The band position of the TM of the nanobar is red-shifted as compared to the ones calculated for other morphologies, while the LM is either blue-shifted or red-shifted depending on the morphologies considered.
American Psychological Association (APA)
Alsawafta, Mohammed& Wahbeh, Mamoun& Truong, Vo-Van. 2012. Simulated Optical Properties of Gold Nanocubes and Nanobars by Discrete Dipole Approximation. Journal of Nanomaterials،Vol. 2012, no. 2012, pp.1-9.
https://search.emarefa.net/detail/BIM-997531
Modern Language Association (MLA)
Alsawafta, Mohammed…[et al.]. Simulated Optical Properties of Gold Nanocubes and Nanobars by Discrete Dipole Approximation. Journal of Nanomaterials No. 2012 (2012), pp.1-9.
https://search.emarefa.net/detail/BIM-997531
American Medical Association (AMA)
Alsawafta, Mohammed& Wahbeh, Mamoun& Truong, Vo-Van. Simulated Optical Properties of Gold Nanocubes and Nanobars by Discrete Dipole Approximation. Journal of Nanomaterials. 2012. Vol. 2012, no. 2012, pp.1-9.
https://search.emarefa.net/detail/BIM-997531
Data Type
Journal Articles
Language
English
Notes
Includes bibliographical references
Record ID
BIM-997531