Investigation of the Plasmonic Resonance of Two Coupled Spheroids by the Discrete Sources Method
Investigation of the Plasmonic Resonance of Two Coupled Spheroids by the Discrete Sources Method
复制标题
用离散源方法研究两个耦合球体的等离激元共振
DOI：
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发表时间：
2012
期刊：
影响因子：
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通讯作者：
T. Wriedt
中科院分区：
文献类型：
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作者：
Y. Eremin;E. Eremina;N. Grishina;T. Wriedt
对离散源法进行了改进，使之适用于研究两个贵金属粒子的近场偏振光散射。用所建立的计算模型研究了两个不同纵横比的金属球体之间的等离子体共振。研究发现，P极化激发对散射行为起着关键作用。结果表明，在光谱域中，电场和散射截面的极大值位置主要取决于球体的长径比，而球体之间的距离对场强的贡献主要与粒子材料无关。
The Discrete Sources Method has been modified to examine near field for polarized light scattering from two coupled noble metal particles. The developed computer model has been employed to investigate plasmonic resonance of two metal spheroids of the different aspect ratio with a gap between them. It has been found that the P -polarized excitation plays a key role for the scattering behavior. It has been shown that the aspect ratio of the spheroids plays the main role in the positions of maxima for both the electric field and the Scattering Cross-Section in spectral domain, while the distance between the spheroids mostly contributes to the field intensity regardless of the particle material.