منابع مشابه
Broadband Terahertz Sensing on Spoof Plasmon Surfaces
In this paper, we show that broadband spectral data can be experimentally extracted from corrugated metallic surfaces consisting of a linear array of subwavelength grooves supporting tightly confined spoof plasmons. Using a combination of the scattering edge coupling method and short-time Fourier transform, we are able to discern the group velocity characteristics of a spoof plasmon pulse, whic...
متن کاملHigh-mode spoof SPP of periodic metal grooves for ultra-sensitive terahertz sensing.
We report terahertz surface plasmon resonance (SPR) sensing based on prism-coupling to the spoof surface plasmon polariton (SSPP) mode existing on periodically grooved metal films. It was demonstrated that, except for the fundamental mode of the SSPP, there was also a higher mode SSPP wave when the depth of groove was larger. Both fundamental and high-order modes of SSPP could be used for terah...
متن کاملPerformance analysis of higher mode spoof surface plasmon polariton for terahertz sensing
Haizi Yao1, Shuncong Zhong1,2,3 a), Wanli Tu1 1 Laboratory of Optics, Terahertz and Non-Destructive Testing, School of Mechanical Engineering and Automation, Fuzhou University, Fuzhou 350108, P. R. China 2 Department of Naval Architecture, Ocean and Marine Engineering, University of Strathclyde, Glasgow G4 0LZ, United Kingdom 3 Fujian Key Laboratory of Medical Instrument and Pharmaceutical Tech...
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The primary purpose of a fingerprint recognition system is to ensure a reliable and accurate user authentication, but the security of the recognition system itself can be jeopardized by spoof attacks. This study addresses the problem of developing accurate, generalizable, and efficient algorithms for detecting fingerprint spoof attacks. Specifically, we propose a deep convolutional neural netwo...
متن کاملTerahertz spoof plasmonic coaxial microcavity.
We theoretically demonstrate a subwavelength spoof surface-plasmon-polariton (SPP) microcavity on a planar metallic surface working at the terahertz regime with a high-quality factor and ultra-small mode volume. The microcavity is based on plasmonic and metamaterial notions, and it consists of an easy-to-manufacture circular aperture and a bell-shaped metallic core. It is shown that such a stru...
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ژورنال
عنوان ژورنال: Materials Today
سال: 2008
ISSN: 1369-7021
DOI: 10.1016/s1369-7021(08)70012-9