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Voltage-controlled Terahertz Phase Shifter with Functional Nanowhiskers and Graphene as Transparent Electrodes

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Abstract

Phase shift exceeding 2π at 1.0 THz with high transmittance was achieved in liquid-crystal THz phase shifters of three different designs. Indium-tin-oxide nanowhiskers and graphene were employed as transparent electrodes. The driving voltage required for a 2π wave plate is as low as 5 Vrms.

© 2019 The Author(s)

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