F. Qaderi, A. Muller, A. Krammer, Miroslav J. Veljovic, Z. Ollmann, M. Hayati, A. Skrivervik, A. Schueler, T. Feurer, A. Ionescu
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Millimeter-wave-triggering of insulator-to-metal transition in Vanadium dioxide
We establish insulator-to-metal transition (IMT) in Vanadium dioxide (VO2) by millimeter-wave (mm-wave) actuation, using two coupled dipole antennas: a simple one as a continuous mm-wave-source and the other one with an embedded VO2 part as an absorber. We measured |S12| by a vector network analyzer (VNA), to show how the induced mm-wave power in insulating biased VO2 causes IMT. The bias voltage is set to enhance the sensitivity in VO2. The VO2 embedded antenna shows sensitivity to the mm-wave power down to 3.2 pW. The experiment proves the detection concept also for terahertz frequencies.
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