Continuously tunable terahertz metamaterial employing magnetically actuated cantilevers
OPTICS EXPRESS, cilt.19, sa.7, ss.5741-5752, 2011 (SCI-Expanded, Scopus)
- Yayın Türü: Makale / Tam Makale
- Cilt numarası: 19 Sayı: 7
- Basım Tarihi: 2011
- Doi Numarası: 10.1364/oe.19.005741
- Dergi Adı: OPTICS EXPRESS
- Derginin Tarandığı İndeksler: Science Citation Index Expanded (SCI-EXPANDED), Scopus
- Sayfa Sayıları: ss.5741-5752
- Ankara Üniversitesi Adresli: Hayır
Özet
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