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Labyrinth based left-handed metamaterials and sub-wavelength focusing of electromagnetic waves

Research output: Chapter in Book/Report/Conference proceedingConference contributionScientificpeer-review


Original languageEnglish
Title of host publicationPhotonic Crystal Materials and Devices IV
Publication statusPublished - 2006
Externally publishedYes
Publication typeA4 Article in a conference publication
EventPhotonic Crystal Materials and Devices IV - San Jose, CA, United States
Duration: 23 Jan 200626 Jan 2006

Publication series

NameProceedings of SPIE
ISSN (Print)0277-786X
ISSN (Electronic)1996-756X


ConferencePhotonic Crystal Materials and Devices IV
CountryUnited States
CitySan Jose, CA


We propose and demonstrate a resonant structure that solves two major problems related to the split-ring resonator structure. These major problems may be stated as the bianisotropy and electric coupling to the magnetic resonance. These two problems introduce difficulties in obtaining isotropic left-handed metamaterial mediums. The resonant structure that we propose here solves both of these problems. We further show that in addition to the magnetic resonance, when combined with a suitable wire medium, the structure that we propose exhibits left-handed transmission band. We further demonstrate the sub-wavelength focusing of electromagnetic waves by use of a two dimensional labyrinth based metamaterial. Our experimental results showed that it is possible to focus the source field with half widths as small as λ/4 by using the labyrinth based metamaterial.


  • Left-handed medium, Magnetic Resonance, Metamaterial, Split-ring Resonator, Sub-wavelength Focusing