Ex) Article Title, Author, Keywords
Published online January 15, 2006
Copyright © The Korean Physical Society.
J. W. Lee, M. A. Seo, J. Y. Sohn, D. J. Park, Y. H. Ahn, D. S. Kim, S. C. Jeoung and Q-Han Park
We report on a 100 \% transmission in one- and two-dimensional plasmonic metamaterials in the terahertz frequency range. At a specific frequency at which the plasmonic meta material is perfectly impedance matched to vacuum, the metal material becomes essentially invisible. In the case of a two-dimensional array of square holes, perfect impedance matching occurs when the effective dielectric constant becomes --2 for samples with hole coverages larger than 0.19. In a one-dimensional array of slits, transmission becomes 100 \% when a symmetric eigenmode is excited and therefore the system becomes effectively impedance-matched.
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