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Naji, M. |
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Motta, Antonella |
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Aletan, Dirar |
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Mohamed, Tarek |
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Ertürk, Emre |
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Taccardi, Nicola |
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Casati, R. |
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Kočí, Jan | Prague |
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Azam, Siraj |
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Ali, M. A. |
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Rančić, M. |
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Ollier, Nadège |
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Azevedo, Nuno Monteiro |
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Kowerdziej, R.
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article
Dielectric properties of highly anisotropic nematic liquid crystals for tunable microwave components
Abstract
In this Letter, we report on measurements of the complex permittivity of highly anisotropic nematicliquid crystals at microwave frequencies as a function of the AC bias voltage. Permittivitymeasurements have been performed by the split post dielectric resonator technique. The experimentshave shown that when the AC bias voltage increases from 0 to 8 V, the real part of the permittivity ofthese liquid crystals changes by up to 28%. The tunability and the relatively low dielectric lossesobserved in these liquid crystal mixtures mean that they are ideal materials for the design of tunablemicrowave components.