Analysis of plasmonic resonances of two paired noble metal spheroids via the discrete sources method

Analysis of plasmonic resonances of two paired noble metal spheroids via the discrete sources method
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通过离散源方法分析两对贵金属球体的等离子体共振

DOI:
10.1080/09500340.2013.794393
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发表时间:
2013
影响因子:
1.3
通讯作者:
Wriedt
Wriedt
中科院分区:
物理与天体物理4区
文献类型:
--
作者:
Eremin;Grishina;Eremina;Wriedt

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采用一种改进的离散源方法,研究了近端贵金属纳米粒子之间的强相互作用。新方案能够以很高的精度计算几个数量级的近场增强。在频域中分析了两个球形粒子之间的总场增强和散射截面与分离距离、椭球纵横比、等体积直径和材料的关系。特别是,研究发现,尺寸较小的球体比尺寸较大的球体可以产生更大的场增强。模拟结果表明,通过选择合适的几何构型和材料,可以实现任意激发波长的局域表面等离子体共振。
A modified scheme of the discrete sources method has been applied to investigate the strong interaction between proximal noble metal nanoparticles. The new scheme enables calculation of a near-field enhancement of several orders with a high degree of accuracy. The total field enhancement in between two spheroidal particles and the scattering cross-section have been analyzed in the frequency domain depending on the separation distance, spheroid aspect ratio, equivolume diameter, and material. In particular, it has been found that spheroids of smaller size can produce larger field enhancement than larger ones. Simulation results demonstrate that it is possible to achieve localized surface plasmon resonance at any desired exciting wavelength by using an appropriate geometrical configuration and material of the coupled spheroids.
DOI: 10.1021/jp900874n
发表时间: 2009-06-08
期刊: The journal of physical chemistry. C, Nanomaterials and interfaces
影响因子: --
作者:
Wang H;Reinhard BM
通讯作者: Reinhard BM
DOI: 10.1016/j.cpc.2012.03.019
发表时间: 2012
期刊: Comput. Phys. Commun.
影响因子: --
作者:
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通讯作者: T. Wriedt
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DOI: 10.1134/s0965542507020108
发表时间: 2007
影响因子: 0.7
作者:
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