Efforts to create a sustainable hydrogen economy are gaining momentum as governments
all over the world are investing in hydrogen production, storage, distribution, and delivery …

Abstract Fabry–Perot (F–P)-based phase demodulation of heterodyne light-induced
thermoelastic spectroscopy (H-LITES) was demonstrated for the first time in this study. The …

Photoacoustic spectroscopy (PAS) is an ultrasensitive method for gas sensing, which
usually using a capacitive microphone as a signal detector. However, the electric nature of …

A fiber-optic photoacoustic (PA) gas sensor with multiplexed Fabry–Pérot (F–P)
interferometric cantilevers is demonstrated. A compact cylindrical nonresonant PA tube with …

In this paper, an on-beam quartz-enhanced photoacoustic spectroscopy (QEPAS) sensor
based on a custom quartz tuning fork (QTF) acting as a photoacoustic transducer, was …

Selectivity is one of the most crucial figures of merit in trace gas sensing, and thus a
comprehensive assessment is necessary to have a clear picture of sensitivity, selectivity …

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 …

Greenhouse gas (GHG) detection plays an important role in climate change research and
industry applications. A novel photoacoustic spectroscopy (PAS) sensor based on multiple …

In recent years, advancements in micromachining techniques and nanomaterials have
enabled the fabrication of highly sensitive devices for the detection of odorous species …

Highlights•An out-of-plane vibration mode based QTF was used for off-axis Quartz
Enhanced Photoacoustic Spectroscopy (QEPAS).•The dual-wavelength FPI demodulation …