用于梳状散射响应和光学标记的多层等离子体覆盖
Multi-Layered Plasmonic Covers for Comb-Like Scattering Response and Optical Tagging
摘要：
我们讨论了多层等离子体粒子的潜力，以定制的光学散射响应。等离子体激元的相互作用局限于薄的堆叠壳层实现了奇特的退化隐形和共振状态发生在任意接近的频率。这些概念被应用到实现ultrasharp梳状散射响应和合成交错的，理想的强超散射态紧密耦合到不可见的状态。我们展示了对材料损失和背景介质变化的鲁棒性，这些特性使这些结构成为光学标记的理想选择。
英文摘要：
We discuss the potential of multilayered plasmonic particles to tailor the optical scattering response. The interplay of plasmons localized in thin stacked shells realizes peculiar degenerate cloaking and resonant states occurring at arbitrarily close frequencies. These concepts are applied to realize ultrasharp comb-like scattering responses and synthesize staggered, ideally strong super-scattering states closely coupled to invisible states. We demonstrate robustness to material losses and to variations in the background medium, properties that make these structures ideal for optical tagging.
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