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Proceedings Paper

Self-supported all-metal THz metamaterials
Author(s): H. O. Moser; L. K. Jian; H. S. Chen; M. Bahou; S. M. P. Kalaiselvi; S. Virasawmy; S. M. Maniam; X. X. Cheng; S. P. Heussler; Shahrain bin Mahmood; B.-I. Wu
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Paper Abstract

Ideal metamaterials would consist of metal conductors only that are necessary for negative ε and μ. However, most of present-day metamaterials include dielectrics for various support functions. Overcoming dielectrics, we manufactured free-standing THz metamaterials as bi-layer chips of S-string arrays suspended by window-frames at a small gap that controls the resonance frequency. Remaining problems concerning their useful range of incidence angles and the possibility of stacking have been solved by manufacturing the first self-supported free-standing all-metal metamaterials featuring upright S-strings interconnected by metal rods. Large-area slabs show maximum magnetic coupling at normal incidence with left-handed resonances between 3.2 - 4.0 THz. Such metamaterials which we dub the meta-foil represent an ideal platform for including index-gradient optics to achieve optical functionalities like beam deflection and imaging.

Paper Details

Date Published: 1 September 2009
PDF: 10 pages
Proc. SPIE 7392, Metamaterials: Fundamentals and Applications II, 73920E (1 September 2009); doi: 10.1117/12.826679
Show Author Affiliations
H. O. Moser, National Univ. of Singapore (Singapore)
L. K. Jian, National Univ. of Singapore (Singapore)
H. S. Chen, Massachusetts Institute of Technology (United States)
Zhejiang Univ. (China)
M. Bahou, National Univ. of Singapore (Singapore)
S. M. P. Kalaiselvi, National Univ. of Singapore (Singapore)
S. Virasawmy, National Univ. of Singapore (Singapore)
S. M. Maniam, National Univ. of Singapore (Singapore)
X. X. Cheng, Zhejiang Univ. (China)
S. P. Heussler, National Univ. of Singapore (Singapore)
Shahrain bin Mahmood, National Univ. of Singapore (Singapore)
B.-I. Wu, Massachusetts Institute of Technology (United States)

Published in SPIE Proceedings Vol. 7392:
Metamaterials: Fundamentals and Applications II
Mikhail A. Noginov; Nikolay I. Zheludev; Allan D. Boardman; Nader Engheta, Editor(s)

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