Continuously tunable terahertz metamaterial employing magnetically actuated cantilevers
Optical Society of America
Ozbey, B., & Aktas, O. (2011). Continuously tunable terahertz metamaterial employing magnetically actuated cantilevers. Optics express, 19(7), 5741-5752.
Please cite this item using this persistent URLhttp://hdl.handle.net/11693/13367
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. (c) 2011 Optical Society of America