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Ultrathin plasmonic metamaterial for spoof localized surface plasmons
Author(s) -
Shen Xiaopeng,
Cui Tie Jun
Publication year - 2014
Publication title -
laser and photonics reviews
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 3.778
H-Index - 116
eISSN - 1863-8899
pISSN - 1863-8880
DOI - 10.1002/lpor.201300144
Subject(s) - plasmon , metamaterial , quadrupole , microwave , terahertz radiation , surface plasmon , planar , optoelectronics , materials science , dielectric , dipole , optics , surface plasmon polariton , physics , atomic physics , computer graphics (images) , quantum mechanics , computer science
The multipolar spoof localized surface plasmons (LSPs) on a planar textured metallic disk are proposed and experimentally demonstrated at microwave frequencies. Based on ultrathin metal film printed on a thin dielectric substrate, the designed plasmonic metamaterial clearly shows multipolar plasmonic resonances, including the dipole, quadrupole, hexapole, octopole, decapole, dodecapole, and quattuordecpole modes. Both numerical simulations and experiments are in good agreement. It is shown that the spoof LSP resonances are sensitive to the disk's geometry and local dielectric environments. Hence, the ultrathin textured metallic disk may be used as plasmonic sensors and find potential applications in the microwave and terahertz frequencies.