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. 2023 Feb 22;12:40. doi: 10.1038/s41377-023-01078-6

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Fig. 2 — Performance of the tuning method. a Metasurface transmission spectra upon applying 4 V to its contact. b Simulation of ITO strip temperature rise by a square (i), or a modified asymmetrically descending step signal (ii). c Transmission optical power from a metasurface when a voltage is applied via (i) or (ii) manner. Magnified plots show the rise time under both bias profiles (i and ii) at the bottom