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Extinction and scattering of metallic nanoparticles in ordered andrandom arrays

机译:有序和随机排列的金属纳米粒子的消光和散射

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Here we investigate the interaction of metallic nanoparticles which support localized surface plasmon resonances (LSPR). We use dark-field spectroscopy and normal-incidence transmission spectroscopy to investigate the scattering and extinction of metallic nanoparticles on their own and in both ordered and random arrays. We compare experimental results with theory based on the coupled dipole approximation (CDA) and the finite-element method (FEM). CDA is used to demonstrate the ability to indirectly measure the extinction of an individual particle by considering a sparse, disordered, finite array of particles.
机译:在这里,我们研究支持局部表面等离振子共振(LSPR)的金属纳米颗粒的相互作用。我们使用暗场光谱和法向入射透射光谱来研究金属纳米粒子自身以及有序和随机阵列的散射和消光。我们将实验结果与基于偶极耦合近似(CDA)和有限元方法(FEM)的理论进行了比较。 CDA用于证明通过考虑稀疏,无序,有限的粒子阵列来间接测量单个粒子的灭绝的能力。

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