journal article·2016-10-19

Homogenous Metamaterial Description of Localized Spoof Plasmons in Spiral Geometries

Zhen Liao, Antonio I. Fernández-Domínguez, Jingjing Zhang, Stefan A. Maier, Tie Jun Cui, Yu Luo

ACS Photonics· Volume 3· Issue 10
Publisher page

Abstract

It has been recently shown that ultrathin spiral metamaterials can support localized spoof plasmon modes whose resonant wavelength is much larger than the size of the structure. Here, an analytical model is developed to describe the electromagnetic properties of the two-dimensional version of these devices: a perfect conducting wire corrugated by spiral grooves. The emergence of localized spoof plasmons in this geometry is quantitatively investigated. Calculations show that these modes can be engineered through the spiral angle and the number of grooves. The theory also allows us to elucidate the contribution of magnetic and electric localized spoof plasmons to the optical response of these metamaterial devices. Finally, experimental evidence of the existence of these modes in extremely thin textured copper disks is also presented.
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Research context

OpenAlex topics: Plasmonic and Surface Plasmon Research · Metamaterials and Metasurfaces Applications · Photonic Crystals and Applications

SciVX discovery tags are terminology-based. OpenAlex topics are source-provided classifications.

Affiliations

State Key Laboratory of Millimetre Waves, Southeast University, Nanjing 210096, China

Departamento de Física Teórica de la Materia Condensada and Condensed Matter Physics Center (IFIMAC), Universidad Autónoma de Madrid, E-28049 Madrid, Spain

School of Electrical and Electronic Engineering, Nanyang Technological University, Nanyang Avenue, 639798, Singapore

The Blackett Laboratory, Department of Physics, Imperial College London, London SW7 2AZ, U.K.

Cooperative Innovation Centre of Terahertz Science, No. 4, Section 2, North Jianshe Road, Chengdu 610054, China

Funding

Engineering and Physical Sciences Research Council · Royal Society · Directorate for Engineering · Ministry of Education - Singapore · the EU Seventh Framework Program · the Spanish MINECO · NTU-A*STAR Silicon Technologies Centre of Excellence

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