High-order localized spoof surface plasmon resonances and experimental verifications

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

Research output: Contribution to journalArticleResearchpeer-review

51 Citations (Scopus)

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.

Original languageEnglish
Article number9590
Number of pages7
JournalScientific Reports
Volume5
DOIs
Publication statusPublished - 15 Apr 2015
Externally publishedYes

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