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

Precise assessment of breath acetone and methane is significant to the medical diagnosis
process. A multi-gas sensing system based on wavelength-modulated differential …

Volatile organic compounds (VOCs) have received increasing attentions recently. They are
important for air quality monitoring, and biomarkers for diseases diagnosis. For the gas …

A high-power near-infrared wavelength-modulated differential photoacoustic spectroscopy
sensor for parts-per-billion (ppb) level methane detection is reported by using a homemade …

Hydrocarbon gas sensing is a challenging task using laser absorption spectroscopy due to
the complex and broad structure of absorption lines. This application requires quick …

A compact photoacoustic spectroscopy system integrated with a non-coaxial multi-pass cell
was developed for improving the instrument performance in the measurement of methane …

Photoacoustic spectroscopy is a viable tool for trace gas detection in various application
fields. In recent years, this technique has been exploited more and more for modern breath …

In this study, we have developed a hybrid photoacoustic spectroscopy (PAS) system for
simultaneous measurement of nitrogen dioxide (NO 2) and methane (CH 4) based on a dual …

Herein, this study describes a sample preconcentration apparatus based on a metal–
organic framework (MOF) of NH2‐UIO‐66@ PDMS adsorbent, which is first coupled to …

We demonstrate a substantial enhancement of gas Raman scattering using a bidirectional
multi-pass cavity CERS system, which incorporates a polarization beam-splitting optical …