Abstract
Recently, with the development of artificial electromagnetic medium, metamaterials offer people the ability to subjectively control electromagnetic wave and provide a promising solution for scarce terahertz (THz) functional devices. In this paper, we describe a method for the active control of terahertz (THz) waves using vanadium dioxide (VO <sub xmlns:mml="http://www.w3.org/1998/Math/MathML" xmlns:xlink="http://www.w3.org/1999/xlink">2</sub> )-embedded hybrid metamaterials (MMs). VO <sub xmlns:mml="http://www.w3.org/1998/Math/MathML" xmlns:xlink="http://www.w3.org/1999/xlink">2</sub> undergoes an insulator-metal phase transition at around 68°C, causing its conductivity to change by five orders of magnitude. Our MM shows that it can realize mode switching via the VO <sub xmlns:mml="http://www.w3.org/1998/Math/MathML" xmlns:xlink="http://www.w3.org/1999/xlink">2</sub> pads with high conductivity in the conduction state and high dynamic conductivity across the phase transition.
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