Self-supported all-metal THz metamaterials

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

doi:10.1117/12.826679

1 September 2009 Self-supported all-metal THz metamaterials

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

Author Affiliations +

Proceedings Volume 7392, Metamaterials: Fundamentals and Applications II; 73920E (2009) https://doi.org/10.1117/12.826679
Event: SPIE NanoScience + Engineering, 2009, San Diego, California, United States

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.

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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, and B.-I. Wu "Self-supported all-metal THz metamaterials", Proc. SPIE 7392, Metamaterials: Fundamentals and Applications II, 73920E (1 September 2009); https://doi.org/10.1117/12.826679

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