Dense Multibutterfly Spots-Enhanced Miniaturized Optical Fiber Photoacoustic Gas Sensor

Pressure-Compensated Fiber-Optic Photoacoustic Sensors for Trace SO2 Analysis in Gas Insulation Equipment

“…In a comprehensive analysis, high pressure is beneficial to the generation of photoacoustic signal. The finite element method (FEM) is utilized to verify this conclusion. − …”

Real-time breath gas analysis of methane using a multipass cell-based near-infrared gas sensor

“…Only one circle pattern formed on each mirror, and the utilization of mirror surfaces was low. In response to the demand for trace gas measurements with low gas consumption, there is a trend towards miniaturisation of MPCs, which reduce the volume of MPCs to less than 100 ml or even smaller [ 30 – 33 ]. By calculating and adjusting the design parameters precisely, the newly developed MPC with a dense pattern can achieve a long OPL with a shorter base length and a smaller volume, making it suitable for developing NIR sensors with high sensitivity, cost effectiveness and fast response.…”

MXene Supported Surface Plasmon Polaritons for Optical Microfiber Ammonia Sensing

“…To address the aforementioned limitations, optical microfibers have emerged as a promising sensing platform. Optical sensing platforms − in general are highly sensitivity and selective, addressing arguably the most important two performance metrics in sensing. − However, unlike semiconductor sensing platforms, optical sensing often involves the development of advanced optical sensing materials that specifically response to a target gas. The material must be engineered to sustain a light field that can be modulated by the contact or proximity of target gas molecules.…”