A ppbv-level mid-infrared photoacoustic spectroscopy sensor was developed for mouth
alcohol tests. A compact CO 2 laser with a sealed waveguide and integrated radio frequency …

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 …

Accurate and sensitive detection of multicomponent trace gases below the parts-per-million
(ppm) level is needed in a variety of medical, industrial, and environmental applications …

High-sensitivity solutions for real-time and on-line multi-component gas detection are
required in coal mine safety, petrochemical and storage and transportation industries …

All-optical light-induced thermoacoustic spectroscopy (AO-LITS) is reported for the first time
for highly sensitive and selective gas sensing, in which a commercial standard quartz tuning …

This paper presents a simultaneous measurement light-induced thermoelectric
spectroscopy (LITES) sensor with high sensitivity for detecting methane (CH_4), carbon …

An all-optical non-resonant photoacoustic spectroscopy system for multicomponent gas
detection based on a silicon cantilever optical microphone (SCOM) and an aseismic …

The real-time monitoring of NH 3, NO, and flue gas temperatures is critical to controlling NO
x emissions from coal-fired power plants, reducing ammonia slip, and realizing accurate …

A high sensitivity and ultra-low concentration range photoacoustic spectroscopy (PAS) gas
detection system, which was based on a novel trapezoid compound ellipsoid resonant …

A recent study unveiled the potential of acrylamide-based stimulus-responsive hydrogels for
volatile organic compound detection in gaseous environments. However, for gas sensing, a …