Microplasma-Induced Deformation of an Anomalous Response Spectrum of Electromagnetic Waves Propagating along Periodically Perforated Metal Plates
Year: 2009
Type: article
Abstract: Metal plates with two-dimensional hole arrays showed unusual responses of electromagnetic waves, and in this study microplasmas were generated in the holes to deform their properties dynamically and to induce novel frequency-dependent permittivity. Transmitted electromagnetic waves in millimeter wavelength range exhibited attenuation of anomalous transmittance around cutoff frequency of equivalent waveguide when microplasmas were present. On the contrary, the reflected waves were significantly enhanced around such a frequency, where reflectance is at minimum in the case without microplasma generation. These experimental results indicated resonance phenomenon which is usually called spoof surface plasmons, and dynamic change of dielectric constant in the medium inside the holes induced by microplasmas shifts their resonance frequency.
Authors: Dae-Sung Lee, Osamu Sakai, Kunihide Tachibana
Institution: Kyoto University
Language: English
Field: Materials Science
Domain: Physical Sciences
Open Access status: bronze
Funder: Murata Science Foundation
OpenAlex ID: W2043280546