If you need an accessible version of this item please contact JSTOR User Support

Experimental Verification of a Negative Index of Refraction

R. A. Shelby, D. R. Smith and S. Schultz
Science
New Series, Vol. 292, No. 5514 (Apr. 6, 2001), pp. 77-79
Stable URL: http://www.jstor.org/stable/3082888
Page Count: 3
  • Download PDF
  • Cite this Item

You are not currently logged in.

Access your personal account or get JSTOR access through your library or other institution:

login

Log in to your personal account or through your institution.

If you need an accessible version of this item please contact JSTOR User Support
Experimental Verification of a Negative Index of Refraction
Preview not available

Abstract

We present experimental scattering data at microwave frequencies on a structured metamaterial that exhibits a frequency band where the effective index of refraction (n) is negative. The material consists of a two-dimensional array of repeated unit cells of copper strips and split ring resonators on interlocking strips of standard circuit board material. By measuring the scattering angle of the transmitted beam through a prism fabricated from this material, we determine the effective n, appropriate to Snell's law. These experiments directly confirm the predictions of Maxwell's equations that n is given by the negative square root of ε·μ for the frequencies where both the permittivity ( ε) and the permeability (μ) are negative. Configurations of geometrical optical designs are now possible that could not be realized by positive index materials.

Page Thumbnails

  • Thumbnail: Page 
77
    77
  • Thumbnail: Page 
78
    78
  • Thumbnail: Page 
79
    79