International Journal of Terahertz Science and Technology
  TST >> Vol.2, No.1, March 2009: PP. 15-22
 

Flexible Quasi-Three-Dimensional Terahertz Electric Metamaterials

Abul K. Azad 1*, Hou-Tong Chen 1, Xinchao Lu 2, Jianqiang Gu 2, Nina R. Weisse-Bernstein 3, Elshan Akhadov 1, Antoinette J. Taylor 1, Weili Zhang 2, and John F.O'Hara 1
1 MPA-CINT, Los Alamos National Laboratory, P. O. Box 1663, MS K771, Los Alamos, New Mexico 87545, USA
2 School of Electrical and Computer Engineering, Oklahoma State University, Stillwater, OK 74078, USA
3 ISR-2, Space and Remote Sensing, Los Alamos National Laboratory, P. O. Box 1663, MS B244, Los Alamos, NM 87545, USA
*1 Email: aazad@lanl.gov

View Full Text: PDF

Abstract: We fabricate quasi-three-dimensional terahertz electric metamaterials by stacking multiple single-layer planar metamaterials fabricated on thin, flexible polyimide substrates. Terahertz time-domain spectroscopy is used to characterize their transmission properties, with which we obtain the frequency dependent complex effective dielectric functions. Increasing the number of layers reduces the resonant transmission minimum, while the extracted effective dielectric functions are independent on the number of layers. The results reveal that the real portions of the dielectric functions only show positive values, however, decreasing the thickness of the polyimide substrates, and thereby the spacing between the adjacent split-ring resonator layers, enables negative electric response.

Keywords: Terahertz, Metamaterials, Effective dielectric functions, Quasi-three-dimensional, Polyimide.

Published: 2009-03-31

Acknowledgments: This work was performed, in part, at the Center for Integrated Nanotechnologies, a U. S. Department of Energy, Office of Basic Energy Sciences nanoscale science research center jointly operated by Los Alamos and Sandia National Laboratories. Los Alamos National Laboratory, an affirmative action equal opportunity employer, is operated by Los Alamos National Security, LLC, for the National Nuclear Security Administration of the U.S. Department of Energy under contract DE-AC52-06NA25396. We gratefully acknowledge support from the U.S. Department of Energy through the LANL/LDRD Program for this work.

Cite this article:
Abul K. Azad, Hou-Tong Chen, Xinchao Lu, Jianqiang Gu, Nina R. Weisse-Bernstein, Elshan Akhadov, Antoinette J. Taylor, Weili Zhang, and John F.O'Hara. Flexible Quasi-Three-Dimensional Terahertz Electric Metamaterials[J]. International Journal of Terahertz Science and Technology, 2009, Vol.2, No.1: 15-22.  DOI:10.11906/TST.015-022.2009.03.02

URL: http://www.tstnetwork.org/10.11906/TST.015-022.2009.03.02

 

 
 

Print | close

Copyright© 2008 Scinco Inc. All Rights Reserved
P.O.Box 6982, Williamsburg, VA 23188, USA var cnzz_protocol = (("https:" == document.location.protocol) ? "https://" : "http://");document.write(unescape("%3Cspan id='cnzz_stat_icon_2409046'%3E%3C/span%3E%3Cscript src='" + cnzz_protocol + "s4.cnzz.com/stat.php%3Fid%3D2409046%26show%3Dpic' type='text/javascript'%3E%3C/script%3E"));