Three-dimensional metamaterial nanotips

被引：33

作者：

Muehlig, S. ^{[1
]}

Rockstuhl, C. ^{[1
]}

Pniewski, J. ^{[2
]}

Simovski, C. R. ^{[3
]}

Tretyakov, S. A. ^{[3
]}

Lederer, F. ^{[1
]}

机构：

[1] Univ Jena, Inst Condensed Matter Theory & Solid State Opt, D-07743 Jena, Germany

[2] Univ Warsaw, Fac Phys, PL-02093 Warsaw, Poland

[3] Aalto Univ, SMARAD, Dept Radio Sci & Engn, FI-02015 Espoo, Finland

来源：

PHYSICAL REVIEW B | 2010年 / 81卷 / 07期

关键词：

PLASMON POLARITON MODES; GOLD NANOPARTICLES; RESONANCES; SCATTERING;

D O I：

10.1103/PhysRevB.81.075317

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

We investigate the optical properties of a three-dimensional metamaterial nanotip that has a pyramidal shape. The nanotip itself is made of a large number of densely packed metallic nanospheres. In analogy to the emergence of a continuous energy band in a crystal, the strong coupling among neighboring nanospheres forces them to act collectively and allows the observation of a broad plasmonic band. The largely increased degrees of freedom within the metamaterial nanotip allow to sustain a great variety of different localized eigenmodes. In this contribution, we systematically reveal their peculiar polarization state and show that they allow for light localization in various well-defined spatial domains.

引用

页数：8

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