Plasmonic Modes and Optical Properties of Gold and Silver Ellipsoidal Nanoparticles by the Discrete Dipole Approximation
Joint Authors
Alsawafta, Mohammed
Wahbeh, Mamoun
Truong, Vo-Van
Source
Issue
Vol. 2012, Issue 2012 (31 Dec. 2012), pp.1-10, 10 p.
Publisher
Hindawi Publishing Corporation
Publication Date
2012-03-13
Country of Publication
Egypt
No. of Pages
10
Main Subjects
Abstract EN
The discrete dipole approximation (DDA) is used to model the absorption efficiency of isolated gold (Au) and silver (Ag) ellipsoidal nanoparticles.
The characteristics of the plasmonic bands of those nanostructures depend strongly on the size and orientation of the particles in both the lab and target frames.
At specific rotation and incident angles, the desired plasmonic mode can be excited.
The result of the simulation shows the possibility of excitation of three plasmonic modes—one longitudinal mode (LM) and two transverse modes (TM)—corresponding to the redistribution of the polarization charges along each principal axis.
At oblique incidence of the incoming light, both the Au LM and a hybrid Au TM are observed whereas three more distinct plasmonic modes can be found in the case of the Ag particle.
The effect of length distribution on the characteristics of the plasmonic bands is also examined for the three principal axes.
The band position of the plasmonic bands associated with the electronic oscillation along each principal axis is found to vary linearly with the axis length.
The linear variation of the band position of the LM is steeper as compared with the one found for the other modes.
American Psychological Association (APA)
Alsawafta, Mohammed& Wahbeh, Mamoun& Truong, Vo-Van. 2012. Plasmonic Modes and Optical Properties of Gold and Silver Ellipsoidal Nanoparticles by the Discrete Dipole Approximation. Journal of Nanomaterials،Vol. 2012, no. 2012, pp.1-10.
https://search.emarefa.net/detail/BIM-997740
Modern Language Association (MLA)
Alsawafta, Mohammed…[et al.]. Plasmonic Modes and Optical Properties of Gold and Silver Ellipsoidal Nanoparticles by the Discrete Dipole Approximation. Journal of Nanomaterials No. 2012 (2012), pp.1-10.
https://search.emarefa.net/detail/BIM-997740
American Medical Association (AMA)
Alsawafta, Mohammed& Wahbeh, Mamoun& Truong, Vo-Van. Plasmonic Modes and Optical Properties of Gold and Silver Ellipsoidal Nanoparticles by the Discrete Dipole Approximation. Journal of Nanomaterials. 2012. Vol. 2012, no. 2012, pp.1-10.
https://search.emarefa.net/detail/BIM-997740
Data Type
Journal Articles
Language
English
Notes
Includes bibliographical references
Record ID
BIM-997740