Flexible metamaterial absorbers for stealth applications at terahertz frequencies.

Published

Journal Article

We have wrapped metallic cylinders with strongly absorbing metamaterials. These resonant structures, which are patterned on flexible substrates, smoothly coat the cylinder and give it an electromagnetic response designed to minimize its radar cross section. We compare the normal-incidence, small-beam reflection coefficient with the measurement of the far-field bistatic radar cross section of the sample, using a quasi-planar THz wave with a beam diameter significantly larger than the sample dimensions. In this geometry we demonstrate a near-400-fold reduction of the radar cross section at the design frequency of 0.87 THz. In addition we discuss the effect of finite sample dimensions and the spatial dependence of the reflection spectrum of the metamaterial.

Full Text

Duke Authors

Cited Authors

  • Iwaszczuk, K; Strikwerda, AC; Fan, K; Zhang, X; Averitt, RD; Jepsen, PU

Published Date

  • January 2012

Published In

Volume / Issue

  • 20 / 1

Start / End Page

  • 635 - 643

PubMed ID

  • 22274387

Pubmed Central ID

  • 22274387

Electronic International Standard Serial Number (EISSN)

  • 1094-4087

International Standard Serial Number (ISSN)

  • 1094-4087

Digital Object Identifier (DOI)

  • 10.1364/oe.20.000635

Language

  • eng