Article

High-order localized spoof surface plasmon resonances and experimental verifications

Zhen LiaoState Key Laboratory of Millimetre Waves, Southeast University, Nanjing 210096, ChinaYu Luo1] Photonic Centre of Excellence (OPTIMUS), School of Electrical and Electronic Engineering, Nanyang Technological University, Nanyang Avenue 639798, Singapore [2] The Blackett Laboratory, Department of Physics, Imperial College London, London SW7 2AZ, UKAntonio I. Fernández‐Domínguez1] The Blackett Laboratory, Department of Physics, Imperial College London, London SW7 2AZ, UK [2] Departamento de Fisica Teorica de la Materia Condensada and Condensed Matter Physics Center (IFIMAC), Universidad Autonoma de Madrid, E-28049 Madrid, SpainXiaopeng ShenState Key Laboratory of Millimetre Waves, Southeast University, Nanjing 210096, ChinaStefan A. MaierThe Blackett Laboratory, Department of Physics, Imperial College London, London SW7 2AZ, UKTie Jun Cui1] State Key Laboratory of Millimetre Waves, Southeast University, Nanjing 210096, China [2] Cooperative Innovation Centre of Terahertz Science, , No.4, Section 2, North Jianshe Road, 610054 Chengdu, China

2015en

ABI

Abstract

We theoretically demonstrated and experimentally verified high-order radial spoof localized surface plasmon resonances supported by textured metal particles. Through an effective medium theory and exact numerical simulations, we show the emergence of these geometrically-originated electromagnetic modes at microwave frequencies. The occurrence of high-order radial spoof plasmon resonances is experimentally verified in ultrathin disks. Their spectral and near-field properties are characterized experimentally, showing an excellent agreement with theoretical predictions. Our findings shed light into the nature of spoof localized surface plasmons, and open the way to the design of broadband plasmonic devices able to operate at very different frequency regimes.

Identifiers

DOI: 10.1038/srep09590

Citations and references

Cited by 20 references

Metrics — AkademScholar