Compact and versatile QEPAS-based sensor box for simultaneous detection of methane and infrared absorber gas molecules in ambient air

A Zifarelli, G Menduni, M Giglio, A Elefante… - Frontiers in …, 2022 - frontiersin.org
In this work we report on an innovative sensor box employing two acoustic detection
modules connected in series for quartz-enhanced photoacoustic multi-gas detection. One …

Trend analysis of air quality index (AQI) and greenhouse gas (GHG) emissions in Taiwan and their regulatory countermeasures

WT Tsai, YQ Lin - Environments, 2021 - mdpi.com
A reduction in the energy-related emissions of air pollutants would not only mitigate climate
change but would also improve local air quality and public health. This paper aimed to …

Filter-free light absorption measurement of volcanic ashes and ambient particulate matter using multi-wavelength photoacoustic spectroscopy

G Wang, P Kulinski, P Hubert, A Deguine… - Progress In …, 2019 - jpier.org
Accurate measurement of atmospheric particulate matter (PM) absorption coefficient is
highly required for study of earth climate change and for monitoring of air quality. In addition …

Simultaneous remote sensing of multiple atmospheric gases (CO2, CH4, and H2O) based on an all-fiber laser heterodyne spectroradiometer

G Wang, Y Zhu, T Zhang, M Du, J Wang, S Wu, S He - Applied Physics B, 2023 - Springer
We report an all-fiber, near-infrared laser heterodyne radiometer (LHR) that uses two
distributed feedback (DFB) diode lasers as local oscillators. This scheme allows the retrieval …

A New Photoacoustic Soot Spectrophone for Filter-Free Measurements of Black Carbon at 880 nm

G Abichou, SH Ngagine, TN Ba, G Wang, P Flament… - Molecules, 2022 - mdpi.com
A new photoacoustic soot spectrometer (PASS) operating at 880 nm was developed, for the
first time, for filter-free measurements of black carbon (BC). The performance of the …

Development of an innovative instrument for the measurement of peroxyl radicals and ozone production in the atmosphere

G Abichou - 2023 - theses.hal.science
Tropospheric ozone (O3) is a major air pollutant with adverse effects on health, climate and
vegetation. This pollutant is produced through a complex series of photochemical reactions …

Influence of electronic band structure on the efficiency of mid-infrared photonic devices.

T Eales - 2020 - openresearch.surrey.ac.uk
The advances in semiconductor technology coupled with the potential of lab-on-chip
spectroscopy, long wavelength telecommunications and small-scale optical interconnects …