Multi-gas detection represents a suitable solution in many applications, such as
environmental and atmospheric monitoring, chemical reaction and industrial process …

On-line analysis of exhaled breath offers insight into a person's metabolism without the need
for sample preparation or sample collection. Due to its noninvasive nature and the possibility …

Mid-infrared optical frequency combs are of significant interest for molecular spectroscopy
due to the large absorption of molecular vibrational modes on the one hand, and the ability …

Optical spectroscopy has a broad scientific basis in chemistry, physics, and material science,
with diverse applications in medicine, pharmaceuticals, agriculture, and environmental …

Ground-level ozone has been increasing worldwide, mainly due to the high anthropogenic
emissions of NOx and VOCs. In addition, ozone generators are sold as water and air …

Fiber‐based quartz enhanced photoacoustic spectroscopy (QEPAS) is a method for trace
gas sensing with excellent properties such as high sensitivity and strong applicability. It has …

Layered semiconductors of the IIIA–VIA group have attracted considerable attention in (opto)
electronic applications thanks to their atomically thin structures and their thickness …

Room temperature operated, solution-processed ultrasensitive broadband photodetectors
are widely used in various industrial companies in the scientific and medical sectors. Herein …

A dual-gas sensor system was developed using a H-type resonance-enhanced multi-pass
photoacoustic (PA) cell. The sensitivity was improved by the double enhancement of optical …

Light-induced thermoelastic spectroscopy (LITES) is a promising optical approach for gas
sensing, which uses a quartz tuning fork (QTF) as a photothermal detector, instead of a …