As temperature cycles between 58 °C and 72 °C, VO2 undergoes a hysteretic transformation between the monoclinic phase and rutile phases, leading to a cyclical change in the complex refractive index that is indicative of semiconductor↔metal transitions. We simulated the visible/near-infrared spectra of the specular reflectance and transmittance of a metasurface incorporating a VO2 sheet and found that the extrema in both spectra blueshift from the cooling to the heating phases at a fixed temperature. This phenomenon is attractive for sensing temporal gradients of temperature.
|Title of host publication||Proceedings of the 2018 20th International Conference on Electromagnetics in Advanced Applications, ICEAA 2018|
|Publisher||Institute of Electrical and Electronics Engineers Inc.|
|Number of pages||3|
|State||Published - 1 Nov 2018|
|Event||20th International Conference on Electromagnetics in Advanced Applications, ICEAA 2018 - Cartagena de Indias, Colombia|
Duration: 10 Sep 2018 → 14 Sep 2018
|Name||Proceedings of the 2018 20th International Conference on Electromagnetics in Advanced Applications, ICEAA 2018|
|Conference||20th International Conference on Electromagnetics in Advanced Applications, ICEAA 2018|
|City||Cartagena de Indias|
|Period||10/09/18 → 14/09/18|
Bibliographical noteFunding Information:
The authors gratefully acknowledge financial support from the PennState-UNI-PUPC Seed Fund jointly set up by Instituto General de la Investigación from Universidad Nacional de Ingenería IGI-UNI and The Pennsylvania State University as well as from the Charles Godfrey Binder Endowment at Penn State.
© 2018 IEEE.
- Thermal hysteresis
- Vanadium dioxide.