Impedance matching plasmonic metamaterials to vacuum

J. W. Lee, M. A. Seo, J. Y. Sohn, D. J. Park, Y. H. Ahn, D. S. Kim, S. C. Jeoung, Q. Han Park

Research output: Contribution to journalArticlepeer-review

19 Citations (Scopus)


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.

Original languageEnglish
Pages (from-to)103-107
Number of pages5
JournalJournal of the Korean Physical Society
Issue number1
Publication statusPublished - 2006 Jan


  • Optical spectroscopy
  • Plasmonic metamaterials
  • Surface plasmon
  • Terahertz

ASJC Scopus subject areas

  • Physics and Astronomy(all)


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