Reconfigurable gradient index using VO 2 memory metamaterials
We demonstrate tuning of a metamaterial device that incorporates a form of spatial gradient control. Electrical tuning of the metamaterial is achieved through a vanadium dioxide layer which interacts with an array of split ring resonators. We achieved a spatial gradient in the magnitude of permittiv...
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Veröffentlicht in: | Applied physics letters 2011-07, Vol.99 (4), p.044103-044103-3 |
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Hauptverfasser: | , , , , , , , , , , , |
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Zusammenfassung: | We demonstrate tuning of a metamaterial device that incorporates a form of spatial gradient control. Electrical tuning of the metamaterial is achieved through a vanadium dioxide layer which interacts with an array of split ring resonators. We achieved a spatial gradient in the magnitude of permittivity, writeable using a single transient electrical pulse. This induced gradient in our device is observed on spatial scales on the order of one wavelength at 1 THz. Thus, we show the viability of elements for use in future devices with potential applications in beamforming and communications. |
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ISSN: | 0003-6951 1077-3118 |
DOI: | 10.1063/1.3615804 |