Theoretical study of electromagnetic scattering by metal nanoparticles
Theoretical study of electromagnetic scattering by metal nanoparticles
复制标题
DOI：
10.1021/jp045451a
复制
发表时间：
2005-03-10
影响因子：
3.3
通讯作者：
Guidotti, C
中科院分区：
文献类型：
--
作者：
Bruzzone, S;Malvaldi, M;Guidotti, C
金属窄颗粒近场光谱学研究的进展要求我们更好地理解颗粒-颗粒和尖端-样品相互作用的作用。从这个角度来看，我们从理论上研究了简单银纳米粒子聚集体的光学行为，在一个非常中等的复杂水平上，就涉及所涉及的场的多极扩展的形式而言，以及先前开发的纳米结构光学行为的简化模型。特别地，我们粗略地考虑了尖端与样品的相互作用，将尖端视为一个额外的单粒子，具有适当的介电行为。
Progress in near-field optical spectroscopy research on metal narroparticles demands a better understanding of the role of particle-particle and tip-sample interactions. In this perspective, we investigate theoretically, at a very moderate level of sophistication, the optical behavior of simple silver nanoparticle aggregates, in terms of a formalism involving a multipolar expansion of the fields involved, along with a simplified model for the optical behavior of nanostructures previously developed. In particular, the tip-sample interaction is taken into account roughly, treating the tip as an additional, single particle, characterized by proper dielectric behavior.