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

*此作品的通信作者

研究成果: 雜誌貢獻期刊論文同行評審

2 引文 斯高帕斯(Scopus)

摘要

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.

原文英語
頁(從 - 到)429-446
頁數18
期刊Journal of Scientific Computing
45
發行號1-3
DOIs
出版狀態已發佈 - 2010 十月
對外發佈

ASJC Scopus subject areas

  • 軟體
  • 理論電腦科學
  • 數值分析
  • 工程 (全部)
  • 計算機理論與數學
  • 計算數學
  • 應用數學

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