WRH professor Saulius Juodkazis (School of Materials and Chemical Technology) published a paper in Bulletin of the Chemical Society of Japan.

“Control of Vibration-Metasurface Coupling at the Mid-Infrared Spectral Window for Inorganic Thermal Emitters”

https://doi.org/10.1246/bcsj.20220163

Abstract:
The coupling between light and molecular vibrational modes is dependent on the efficiency of molecular absorption. Here, we demonstrate a method to control the coupling between molecular mid-infrared absorption/emission in the chemical fingerprinting spectral window and a metasurface using SiO₂ as an absorber/emitter and CaF₂ as a spacer to optimize the strength of coupling. The use of inorganic dielectric I-spacers in metal–insulator–metal (MIM) metasurfaces opens applications in narrow-band emitters for a mid-infrared spectral window at elevated temperatures (>350 °C), where polymer/organic I-spacers degrade.