Continuously tunable terahertz metamaterial employing magnetically actuated cantilevers
Date
2011
Authors
Ozbey, B.
Aktas O.
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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.
Source Title
Optics Express
Publisher
Optical Society of American (OSA)
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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
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Language
English