Influence of the interaction between metal particles on optical properties of Ag-Si3N4 composite films. II. Two-particle approximation

The interaction between metal particles was calculated based on the discrete dipole method. The calculated results revealed that the multiple interactions in a collection of metal particles are dominated by the interaction between the neighboring particles. Thus, a two-particle approximation was ded...

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Veröffentlicht in:Applied optics (2004) 2006-02, Vol.45 (6), p.1249-1253
Hauptverfasser: Ou, Ding Rong, Zhu, Jing, Zhao, Jia Hao
Format: Artikel
Sprache:eng
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Zusammenfassung:The interaction between metal particles was calculated based on the discrete dipole method. The calculated results revealed that the multiple interactions in a collection of metal particles are dominated by the interaction between the neighboring particles. Thus, a two-particle approximation was deduced and applied to estimate the optical absorption and near-field enhancement property of Ag-Si3N4 composite films. The calculated results indicated that the interaction between Ag particles will induce extra absorption near the surface plasmon resonance peak and improve the near-field enhancement property of composite films. Calculated results were consistent with the experimental results.
ISSN:1559-128X
DOI:10.1364/AO.45.001249