Electronically reconfigurable metal-on-silicon metamaterial
Abstract
Reconfigurable metamaterial-based apertures can play a unique role in both imaging
and in beam-forming applications, where current technology relies mostly on the fabrication
and integration of large detector or antenna arrays. Here, we report the experimental
demonstration of a voltage-controlled, silicon-based electromagnetic metamaterial
operating in the W-band (75-110 GHz). In this composite semiconductor metamaterial,
patterned gold metamaterial elements serve both to manage electromagnetic wave propagation
while simultaneously acting as electrical Schottky contacts that control the local
conductivity of the semiconductor substrate. The active device layers consist of a
patterned metal on a 2-μm-thick n-doped silicon layer, adhesively bonded to a transparent
Pyrex wafer. The transmittance of the composite metamaterial can be modulated over
a given frequency band as a function of bias voltage. We demonstrate a quantitative
understanding of the composite device through the application of numerical approaches
that simultaneously treat the semiconductor junction physics as well as wave propagation.
© 2012 American Physical Society.
Type
Journal articlePermalink
https://hdl.handle.net/10161/7573Published Version (Please cite this version)
10.1103/PhysRevB.86.075112Publication Info
Urzhumov, Y; Lee, JS; Tyler, T; Dhar, S; Nguyen, V; Jokerst, NM; ... Smith, DR (2012). Electronically reconfigurable metal-on-silicon metamaterial. Physical Review B - Condensed Matter and Materials Physics, 86(7). pp. 075112. 10.1103/PhysRevB.86.075112. Retrieved from https://hdl.handle.net/10161/7573.This is constructed from limited available data and may be imprecise. To cite this
article, please review & use the official citation provided by the journal.
Collections
More Info
Show full item recordScholars@Duke
Nan Marie Jokerst
J. A. Jones Distinguished Professor of Electrical and Computer Engineering
Dr. Nan Marie Jokerst is the J. A. Jones Distinguished Professor of Electrical and
Computer Engineering at Duke University, and the Executive Director of the Duke Shared
Materials Instrumentation Facility, a Duke shared cleanroom and characterization facility.
She received her BS in Physics from Creighton University in 1982, and her MS and
PhD in Electrical Engineering from the University of Southern California in 1984 and
1989, respectively. She is a Fellow of the IEEE, and has served as an el
David R. Smith
James B. Duke Distinguished Professor of Electrical and Computer Engineering
Dr. David R. Smith is currently the James B. Duke Professor of Electrical and Computer
Engineering Department at Duke University. He is also Director of the Center for Metamaterials
and Integrated Plasmonics at Duke and holds the positions of Adjunct Associate Professor
in the Physics Department at the University of California, San Diego, and Visiting
Professor of Physics at Imperial College, London. Dr. Smith received his Ph.D. in
1994 in Physics from the University of California, San D
Yaroslav A. Urzhumov
Adjunct Assistant Professor in the Department of Electrical and Computer Engineering
<!--[if gte mso 9]>
<![endif]--> <!--[if gte mso 9]>
<![endif]-->Dr. Urzhumov is Adjunct Assistant Professor of ECE at Duke University,
and also a Technologist at the Metamaterials Commercialization Center of Intellectual
Ventures. Previously a research faculty at Duke, he works on applied and theoretical
aspects of metama
Alphabetical list of authors with Scholars@Duke profiles.

Articles written by Duke faculty are made available through the campus open access policy. For more information see: Duke Open Access Policy
Rights for Collection: Scholarly Articles
Works are deposited here by their authors, and represent their research and opinions, not that of Duke University. Some materials and descriptions may include offensive content. More info