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首页> 外文期刊>Physical review >Localized and delocalized surface-plasmon-mediated light tunneling through monolayer hexagonal-close-packed metallic nanoshells
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Localized and delocalized surface-plasmon-mediated light tunneling through monolayer hexagonal-close-packed metallic nanoshells

机译:通过单层六角密堆积金属纳米壳的局部和离域表面等离子体介导的光隧穿

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摘要

We studied theoretically light transmission through a monolayer of hexagonal-close-packed nanoparticles consisting of a metallic shell and a dielectric core. We found that light can transmit through the dense particle assemblies via excitation of a variety of surface-plasmons (SPs). Localized SPs confined within metal nanoshells can mediate a narrow-band dispersionless transmission resonance (TR). Wide-band TRs were also observed as a result of strong near-field interparticle SP couplings, forming hybrid modes that are either localized at the nanogaps between adjacent particles or confined in the lattice pores, or distributed across the structure, each with distinct dispersion characteristics. Optical tuning strategies of these TRs are also elucidated that can allow for observation of SP anticrossing effects.
机译:我们从理论上研究了通过六边形密堆积纳米颗粒(由金属壳和介电核组成)的单层光传输。我们发现,光可以通过各种表面等离子体激元(SP)的激发而穿过密集的粒子组件。局限在金属纳米壳内的SP可以介导窄带无分散传输共振(TR)。由于强近场粒子间SP耦合,还观察到宽带TR,形成混合模式,该混合模式位于相邻粒子之间的纳米间隙或局限在晶格孔中,或分布在整个结构中,每个都有独特的分散特性。还阐明了这些TR的光学调谐策略,可用于观察SP抗交叉效应。

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