A bicontrollable metasurface containing VO2, a non-linear optical polymer, and teflon was simulated to function as a bandpass filter in the infrared spectral regime. The metasurface is a singly periodic array of identical unit cells composed of parallel rectangular VO2 rods mounted on a silicon-dioxide substrate and covered with BAYI electro-optical polymer. The unit-cell dimensions are chosen such that the transmittance has a maximum in the 1418-to-l635-nm wavelength range, when the polymer face is normally illuminated by a plane wave with electric field parallel to the axis of the VO2 rods. When the crystallographic phase of VO2 is switched from monoclinc to tetragonal, the maximum transmittance redshifts from 1513 nm to 1656 nm, provided that no electrostatic field is present. However, when a dc potential of 50 V is applied across the polymer in the thickness direction, the minimum blueshifts from 1513 nm to 1418 nm at temperature T< 58°C temperature (VO2 is monoclinic), and from 1656 nm to 1513 nm at T> 72°C temperature (VO2 is tetragonal).
|Title of host publication||2022 International Conference on Electromagnetics in Advanced Applications, ICEAA 2022|
|Publisher||Institute of Electrical and Electronics Engineers Inc.|
|Number of pages||3|
|State||Published - 2022|
|Event||23rd International Conference on Electromagnetics in Advanced Applications, ICEAA 2022 - Cape Town, South Africa|
Duration: 5 Sep 2022 → 9 Sep 2022
|Name||2022 International Conference on Electromagnetics in Advanced Applications, ICEAA 2022|
|Conference||23rd International Conference on Electromagnetics in Advanced Applications, ICEAA 2022|
|Period||5/09/22 → 9/09/22|
Bibliographical notePublisher Copyright:
© 2022 IEEE.
- Pockels effect
- unit cell