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 …

Quantum cascade lasers (QCL) are the first room temperature semiconductor laser source
for the mid-IR spectral region, triggering substantial development for the advancement of …

Human exhaled breath consists of more than 3000 volatile organic compounds, many of
which are relevant biomarkers for various diseases. Although gas chromatography has been …

Nitric oxide (NO) is a potential bioactive gas produced continuously and constantly in the
airways of healthy subjects. In allergic airway inflammation, the level of exhaled NO is …

The measurement of exhaled nitric oxide (NO) has been employed in the diagnosis of
specific types of airway inflammation, guiding treatment monitoring by predicting and …

We consider the possibility of using a combination of machine and deep learning in the
spectral analysis for multicomponent gas mixtures. The experimental setup consists of a …

Optical spectroscopic sensors are powerful tools for analyzing gas mixtures in industrial and
scientific applications. Whilst highly sensitive spectrometers tend to have a large footprint …

In the rapidly developing field of conjugated polymer science, the attribute of
electrochromism these materials exhibit provides for a multitude of innovative application …

In this work, we present the first demonstration of a gas sensor utilizing the Wavelength
Modulation Spectroscopy technique and a mid-IR guiding Antiresonant Hollow-Core Fiber …

A miniaturized photoacoustic spectroscopy-based gas sensor is proposed for the purpose of
detecting sub-ppm-level carbonyl sulfide (OCS) using a tunable mid-infrared interband …