Continuously tunable terahertz metamaterial employing magnetically actuated cantilevers
Date
2011
Authors
Ozbey, B.
Aktas O.
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Source Title
Optics Express
Print ISSN
10944087
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Publisher
Optical Society of American (OSA)
Volume
19
Issue
7
Pages
5741 - 5752
Language
English
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Abstract
Terahertz metamaterial structures that employ flexing microelectromechanical cantilevers for tuning the resonance frequency of an electric split-ring resonator are presented. The tuning cantilevers are coated with a magnetic thin-film and are actuated by an external magnetic field. The use of cantilevers enables continuous tuning of the resonance frequency over a large frequency range. The use of an externally applied magnetic field for actuation simplifies the metamaterial structure and its use for sensor or filter applications. A structure for minimizing the actuating field is derived. The dependence of the tunable bandwidth on frequency is discussed. © 2011 Optical Society of America.
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Keywords
Magnetic fields , Metamaterials , Nanocantilevers , Natural frequencies , Applied magnetic fields , Continuous tuning , External magnetic field , Filter applications , Frequency ranges , Metamaterial structures , Micro-electro-mechanical , Resonance frequencies , Split-ring resonator , Tera Hertz , Tunable bandwidth , Tuning , article , equipment , equipment design , instrumentation , magnetism , microelectromechanical system , terahertz radiation , transducer , Equipment Design , Equipment Failure Analysis , Magnetics , Micro-Electrical-Mechanical Systems , Terahertz Radiation , Transducers