Please use this identifier to cite or link to this item: https://doi.org/10.1038/srep11678
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dc.titleMicroelectromechanically tunable multiband metamaterial with preserved isotropy
dc.contributor.authorPitchappa, P
dc.contributor.authorHo, C.P
dc.contributor.authorQian, Y
dc.contributor.authorDhakar, L
dc.contributor.authorSingh, N
dc.contributor.authorLee, C
dc.date.accessioned2020-09-10T01:55:07Z
dc.date.available2020-09-10T01:55:07Z
dc.date.issued2015
dc.identifier.citationPitchappa, P, Ho, C.P, Qian, Y, Dhakar, L, Singh, N, Lee, C (2015). Microelectromechanically tunable multiband metamaterial with preserved isotropy. Scientific Reports 5 : 11678. ScholarBank@NUS Repository. https://doi.org/10.1038/srep11678
dc.identifier.issn20452322
dc.identifier.urihttps://scholarbank.nus.edu.sg/handle/10635/175503
dc.description.abstractWe experimentally demonstrate a micromachined reconfigurable metamaterial with polarization independent characteristics for multiple resonances in terahertz spectral region. The metamaterial unit cell consists of eight out-of-plane deformable microcantilevers placed at each corner of an octagon ring. The octagon shaped unit cell geometry provides the desired rotational symmetry, while the out-of-plane movable cantilevers preserves the symmetry at different configurations of the metamaterial. The metamaterial is shown to provide polarization independent response for both electrical inductive-capacitive (eLC) resonance and dipolar resonance at all states of actuation. The proposed metamaterial has a switching range of 0.16 THz and 0.37 THz and a transmission intensity change of more than 0.2 and 0.7 for the eLC and dipolar resonances, respectively for both TE and TM modes. Further optimization of the metal layer thickness, provides an improvement of up to 80% modulation at 0.57 THz. The simultaneously tunable dual band isotropic metamaterial will enable the realization of high performance electro-optic devices that would facilitate numerous terahertz applications such as compressive terahertz imaging, miniaturized terahertz spectroscopy and next generation high speed wireless communication possible in the near future.
dc.publisherNature Publishing Group
dc.sourceUnpaywall 20200831
dc.typeArticle
dc.contributor.departmentDEPT OF ELECTRICAL & COMPUTER ENGG
dc.description.doi10.1038/srep11678
dc.description.sourcetitleScientific Reports
dc.description.volume5
dc.description.page11678
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