Engineering Nanoparticles with Pure High-Order Multipole Scattering,ACS Photonics

当前位置： X-MOL 学术 › ACS Photonics › 论文详情

Our official English website, www.x-mol.net, welcomes your feedback! (Note: you will need to create a separate account there.)

Engineering Nanoparticles with Pure High-Order Multipole Scattering
ACS Photonics ( IF 6.5 ) Pub Date : 2020-02-28 , DOI: 10.1021/acsphotonics.0c00078
Vladimir A. Zenin ₁ , Cesar E. Garcia-Ortiz ₂ , Andrey B. Evlyukhin _{3,

4} , Yuanqing Yang ₁ , Radu Malureanu _{5,

6} , Sergey M. Novikov _{1,

4} , Victor Coello ₂ , Boris N. Chichkov _{3,

7} , Sergey I. Bozhevolnyi _{1,

8} , Andrei V. Lavrinenko ₅ , N. Asger Mortensen _{1,

8}

Affiliation

The ability to control scattering directionality of nanoparticles is in high demand for many nanophotonic applications. One of the challenges is to design nanoparticles producing pure high-order multipole scattering (e.g., octopole, hexadecapole), whose contribution is usually negligible compared with strong low-order multipole scattering (i.e., dipole or quadrupole). Here we present an intuitive way to design such nanoparticles by introducing a void inside them. We show that both shell and ring nanostructures allow regimes with nearly pure high-order multipole scattering. Experimentally measured scattering diagrams from properly designed silicon rings at near-infrared wavelengths (∼800 nm) reproduce well scattering patterns of an electric octopole and magnetic hexadecapole. Our findings advance significantly inverse engineering of nanoparticles from given complex scattering characteristics, with possible applications in biosensing, optical metasurfaces, and quantum communications.

中文翻译：

利用纯高阶多极散射工程纳米颗粒。

对于许多纳米光子应用，对控制纳米颗粒的散射方向性的能力提出了很高的要求。挑战之一是设计产生纯高阶多极散射（例如，八极，十六极）的纳米粒子，与强低阶多极散射（即偶极或四极）相比，其贡献通常可以忽略不计。在这里，我们提出了一种通过在纳米颗粒内部引入空隙来设计此类纳米颗粒的直观方法。我们表明，壳和环的纳米结构都允许具有几乎纯的高阶多极散射体制。通过适当设计的硅环在近红外波长（约800 nm）上进行实验测量的散射图可重现八极杆和六极杆的良好散射图。

更新日期：2020-02-28

点击分享查看原文

点击收藏

公开下载

阅读更多本刊最新论文本刊介绍/投稿指南11