Pseudospectral modeling of nano-optics in Ag sphere arrays

Bang Yan Lin, Chun Hao Teng, Hung Chun Chang, Hui Hsin Hsiao, Juen Kai Wang, Yuh Lin Wang

Research output: Contribution to journalArticle

2 Citations (Scopus)

Abstract

We report a Legendre pseudospectral modeling of silver sphere arrays illuminated by light waves. A special feature of the present computation is that the dispersive nature of silver is described by a Drude-Lorentz model with model parameters obtained by fitting the frequency-domain complex-valued dielectric constants measured experimentally. Numerical validations are conducted based on solving both the near and far fields of the Mie scattering problem, and we observe good convergence on the numerical fields. The far-field patterns of the Ag sphere arrays are simulated. The results are compared to those obtained by the dipole-coupling-model method, and we observe very good agreement between these results. The near-field patterns are also computed, and localized enhanced electric fields in the inter-particle gap regions due to plasmonic coupling between Ag particles are visualized. As the gap between Ag particles is reduced the strength of the localized enhanced electric field is increased.

Original languageEnglish
Pages (from-to)429-446
Number of pages18
JournalJournal of Scientific Computing
Volume45
Issue number1-3
DOIs
Publication statusPublished - Oct 2010
Externally publishedYes

Fingerprint

Optics
Silver
Near-field
Electric Field
Electric fields
Modeling
Mie Theory
Far-field Pattern
Dielectric Constant
Plasmonics
Scattering Problems
Legendre
Far Field
Dipole
Frequency Domain
Permittivity
Model
Scattering

Keywords

  • Ag nano-spheres
  • Plasmonic coupling
  • Pseudospectral simulation
  • Surface plasmon enhanced field

ASJC Scopus subject areas

  • Theoretical Computer Science
  • Software
  • Engineering(all)
  • Computational Theory and Mathematics

Cite this

Lin, B. Y., Teng, C. H., Chang, H. C., Hsiao, H. H., Wang, J. K., & Wang, Y. L. (2010). Pseudospectral modeling of nano-optics in Ag sphere arrays. Journal of Scientific Computing, 45(1-3), 429-446. https://doi.org/10.1007/s10915-010-9376-z

Pseudospectral modeling of nano-optics in Ag sphere arrays. / Lin, Bang Yan; Teng, Chun Hao; Chang, Hung Chun; Hsiao, Hui Hsin; Wang, Juen Kai; Wang, Yuh Lin.

In: Journal of Scientific Computing, Vol. 45, No. 1-3, 10.2010, p. 429-446.

Research output: Contribution to journalArticle

Lin, BY, Teng, CH, Chang, HC, Hsiao, HH, Wang, JK & Wang, YL 2010, 'Pseudospectral modeling of nano-optics in Ag sphere arrays', Journal of Scientific Computing, vol. 45, no. 1-3, pp. 429-446. https://doi.org/10.1007/s10915-010-9376-z
Lin, Bang Yan ; Teng, Chun Hao ; Chang, Hung Chun ; Hsiao, Hui Hsin ; Wang, Juen Kai ; Wang, Yuh Lin. / Pseudospectral modeling of nano-optics in Ag sphere arrays. In: Journal of Scientific Computing. 2010 ; Vol. 45, No. 1-3. pp. 429-446.
@article{cef444964917459798ed027b296f7e50,
title = "Pseudospectral modeling of nano-optics in Ag sphere arrays",
abstract = "We report a Legendre pseudospectral modeling of silver sphere arrays illuminated by light waves. A special feature of the present computation is that the dispersive nature of silver is described by a Drude-Lorentz model with model parameters obtained by fitting the frequency-domain complex-valued dielectric constants measured experimentally. Numerical validations are conducted based on solving both the near and far fields of the Mie scattering problem, and we observe good convergence on the numerical fields. The far-field patterns of the Ag sphere arrays are simulated. The results are compared to those obtained by the dipole-coupling-model method, and we observe very good agreement between these results. The near-field patterns are also computed, and localized enhanced electric fields in the inter-particle gap regions due to plasmonic coupling between Ag particles are visualized. As the gap between Ag particles is reduced the strength of the localized enhanced electric field is increased.",
keywords = "Ag nano-spheres, Plasmonic coupling, Pseudospectral simulation, Surface plasmon enhanced field",
author = "Lin, {Bang Yan} and Teng, {Chun Hao} and Chang, {Hung Chun} and Hsiao, {Hui Hsin} and Wang, {Juen Kai} and Wang, {Yuh Lin}",
year = "2010",
month = "10",
doi = "10.1007/s10915-010-9376-z",
language = "English",
volume = "45",
pages = "429--446",
journal = "Journal of Scientific Computing",
issn = "0885-7474",
publisher = "Springer New York",
number = "1-3",

}

TY - JOUR

T1 - Pseudospectral modeling of nano-optics in Ag sphere arrays

AU - Lin, Bang Yan

AU - Teng, Chun Hao

AU - Chang, Hung Chun

AU - Hsiao, Hui Hsin

AU - Wang, Juen Kai

AU - Wang, Yuh Lin

PY - 2010/10

Y1 - 2010/10

N2 - We report a Legendre pseudospectral modeling of silver sphere arrays illuminated by light waves. A special feature of the present computation is that the dispersive nature of silver is described by a Drude-Lorentz model with model parameters obtained by fitting the frequency-domain complex-valued dielectric constants measured experimentally. Numerical validations are conducted based on solving both the near and far fields of the Mie scattering problem, and we observe good convergence on the numerical fields. The far-field patterns of the Ag sphere arrays are simulated. The results are compared to those obtained by the dipole-coupling-model method, and we observe very good agreement between these results. The near-field patterns are also computed, and localized enhanced electric fields in the inter-particle gap regions due to plasmonic coupling between Ag particles are visualized. As the gap between Ag particles is reduced the strength of the localized enhanced electric field is increased.

AB - We report a Legendre pseudospectral modeling of silver sphere arrays illuminated by light waves. A special feature of the present computation is that the dispersive nature of silver is described by a Drude-Lorentz model with model parameters obtained by fitting the frequency-domain complex-valued dielectric constants measured experimentally. Numerical validations are conducted based on solving both the near and far fields of the Mie scattering problem, and we observe good convergence on the numerical fields. The far-field patterns of the Ag sphere arrays are simulated. The results are compared to those obtained by the dipole-coupling-model method, and we observe very good agreement between these results. The near-field patterns are also computed, and localized enhanced electric fields in the inter-particle gap regions due to plasmonic coupling between Ag particles are visualized. As the gap between Ag particles is reduced the strength of the localized enhanced electric field is increased.

KW - Ag nano-spheres

KW - Plasmonic coupling

KW - Pseudospectral simulation

KW - Surface plasmon enhanced field

UR - http://www.scopus.com/inward/record.url?scp=77956182683&partnerID=8YFLogxK

UR - http://www.scopus.com/inward/citedby.url?scp=77956182683&partnerID=8YFLogxK

U2 - 10.1007/s10915-010-9376-z

DO - 10.1007/s10915-010-9376-z

M3 - Article

VL - 45

SP - 429

EP - 446

JO - Journal of Scientific Computing

JF - Journal of Scientific Computing

SN - 0885-7474

IS - 1-3

ER -