SiNx/SiO2-Based Fabry-Perot Interferometer on Sapphire for Near-UV Optical Gas Sensing of Formaldehyde in Air. - Reinoud F. Wolffenbuttel; Declan Winship; David Bilby; Jacobus H. Visser; Yutao Qin; Yogesh B. Gianchandani (Sensors, 2024)