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首页> 外文会议>Plasmonics: Metallic nanostructures and their optical properties VIII >Plasmonic nanostructures: local versus nonlocal response
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Plasmonic nanostructures: local versus nonlocal response

机译：等离子体纳米结构：局部响应与非局部响应

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摘要

We study the importance of taking the nonlocal optical response of metals into account for accurate determination of optical properties of nanoplasmonic structures. Here we focus on the computational physics aspects of this problem, and in particular we report on the nonlocal-response package that we wrote for state-of the art numerical software, enabling us to take into account the nonlocal material response of metals for any arbitrarily shaped nanoplasmonic structures, without much numerical overhead as compared to the standard local response. Our method is a frequency-domain method, and hence it is sensitive to possible narrow resonances that may arise due to strong electronic quantum confinement in the metal. This feature allows us to accurately determine which geometries are strongly affected by nonlocal response, for example regarding applications based on electric field enhancement properties for which metal nanostructures are widely used.
机译：我们研究了考虑金属的非局部光学响应以精确确定纳米等离子体结构的光学性质的重要性。在这里，我们专注于此问题的计算物理方面，尤其是我们报告了为最先进的数值软件编写的非局部响应包，从而使我们能够任意考虑金属的非局部材料响应形状的纳米等离子体结构，与标准的局部响应相比，没有太多的数值开销。我们的方法是频域方法，因此对金属中强电子量子约束可能引起的窄共振很敏感。此功能使我们能够准确确定哪些几何形状受到非局部响应的强烈影响，例如关于基于电场增强特性的应用（金属纳米结构已广泛应用）。

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  • 来源
  • 会议地点 San Diego CA(US)
  • 作者

    Giuseppe Toscano; Martijn Wubs; Sanshui Xiao; Min Yan; Z. Fatih Ozturk; Antti-Pekka Jauho; N. Asger Mortensen;

  • 作者单位

    DTU Fotonik, Department of Photonics Engineering, Technical University of Denmark,rnØrsteds Plads, DK-2800 Kgs. Lyngby, Denmark;

    DTU Fotonik, Department of Photonics Engineering, Technical University of Denmark,rnØrsteds Plads, DK-2800 Kgs. Lyngby, Denmark;

    DTU Fotonik, Department of Photonics Engineering, Technical University of Denmark,rnØrsteds Plads, DK-2800 Kgs. Lyngby, Denmark;

    DTU Fotonik, Department of Photonics Engineering, Technical University of Denmark,rnØrsteds Plads, DK-2800 Kgs. Lyngby, Denmark. Laboratory of Photonics and Microwave Engineering, School of Information and Communication Technology, Royal Institute of Technology (KTH), Sweden;

    DTU Fotonik, Department of Photonics Engineering, Technical University of Denmark,rnØrsteds Plads, DK-2800 Kgs. Lyngby, Denmark. Istanbul Technical University, Istanbul, Turkey;

    Department of Applied Physics, Aalto University School of Science and Technology,rnP.O. Box 11100, FI-00076 Aalto, Finland. DTU Nanotech, Department of Micro- and Nanotechnology, Technical University of Denmark, Ørsteds Plads, DK-2800 Kgs. Lyngby, Denmark;

    DTU Fotonik, Department of Photonics Engineering, Technical University of Denmark,rnØrsteds Plads, DK-2800 Kgs. Lyngby, Denmark;

  • 会议组织
  • 原文格式 PDF
  • 正文语种 eng
  • 中图分类 金属材料;
  • 关键词

    Nanoplasmonics; nonlocal optical response; hydrodynamical Drude model; field enhancement;

    机译：纳米等离子体;非局部光学响应；流体动力学德鲁伊模型；场增强;

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