Left-handed metamaterial based superlens for subwavelength imaging of electromagnetic waves

K. Aydin*, E. Ozbay

*Corresponding author for this work

Research output: Contribution to journalArticlepeer-review

24 Scopus citations

Abstract

Lenses made of negative index materials have the ability to focus the propagating and evanescent components of electromagnetic waves. Such a possibility enables super resolution, in turn resulting in sharper, subwavelength size images. In this present work, we present subwavelength imaging that was obtained from a one-dimensional left-handed metamaterial (LHM) composed of alternating layers of split-ring resonators and thin wires. We investigated the effect of the thickness of LHM lenses on image size. The left-handed pass band within the negative permittivity and permeability region is shown experimentally and theoretically for different thicknesses of LHM slabs. We also studied the transmission-phase of LHMs with a different number of unit cells along the propagation direction. The phase decreases with the increasing thicknesses of LHM slabs, proving that the phase velocity is negative in the left-handed transmission band.

Original languageEnglish (US)
Pages (from-to)137-141
Number of pages5
JournalApplied Physics A: Materials Science and Processing
Volume87
Issue number2
DOIs
StatePublished - May 2007

ASJC Scopus subject areas

  • Chemistry(all)
  • Materials Science(all)

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