The PolySense team has just published  a new review manuscript on Analytica Chimica Acta journal (IF 6.558) reporting on the implementation of the QEPAS technique for multi-gas detection in three main areas of applications: i) multi-gas trace sensing by exploiting non-interfering absorption features; ii) multi-gas detection dealing with overlapping absorption bands; iii) multi-gas detection in fluctuating Leggi di piùNew publication on Analytica Chimica Acta[…]

Polysense is proud to communicate that the manuscript: “Multi-pass quartz-enhanced photoacoustic spectroscopy-based trace gas sensing” doi.org/10.1364/OL.418520 have been listed among the top 15 cited manuscripts published on Optics Letters since 2020. Note that our manuscript is the only one in the list published in 2021. The following link provide access to the article. http://polysense.poliba.it/wp-content/uploads/2021/02/128_Multipass-QEPAS_OL_2021.pdf  

The PolySense team has just published  a new article on Applied Science reporting on the theoretical analysis and experimental investigation of the influence of gas pressure on resonance properties, namely, the quality factor and resonance frequency, of a T-shaped quartz tuning fork (QTF).  The results show that acoustic coupling is strongly influenced by air pressure, Leggi di piùNew Publication on Applied Science[…]

The PolySense team has just published  a new article on OSA Optics Express Journal reporting on a novel an ultra-highly sensitive light-induced thermoelastic spectroscopy (LITES)-based carbon monoxide (CO) sensor exploiting custom quartz tuning forks (QTFs) as a photodetector, a multi-pass cell and a mid-infrared quantum cascade laser (QCL). At an integration time of 200 ms a minimum Leggi di piùNew Publication on Optics Express[…]

The PolySense team is proud to announce that the team member dr. Marilena Giglio received the Sensors 2021 travel award. https://www.mdpi.com/…/awards.pdf/0/pdf_3_2021_7_award.pdf

The PolySense team has just published  a new article on OSA Optics Letters Journal reporting on a novel multi-pass quartz-enhanced photoacoustic spectroscopy-based trace gas sensor . The multi-pass configuration allows the laser beam to pass through the QTF prong spacing six times. Compared to a conventional QEPAS measurement, the MP-QEPAS technique provided an enhancement of signal Leggi di piùNew Publication on Optics Letters[…]

The PolySense team has just published  a new article on Photoacoustics Journal Elsevier (IF 5.87)  reporting on a comparison between Quartz-Enhanced Photoacoustic Spectroscopy (QEPAS) and Photothermal Spectroscopy (PTS). Compact QEPAS and PTS detection modules were realized and integrated in a gas sensor system for detection of carbon monoxide (CO). Performance was compared and ultimate detection limits Leggi di piùNew Publication on Photoacoustics Journal[…]

The PolySense team has just published  a new article on Journal of Lightwave Technology (IF 4.288)  reporting on a new modelling of QEPAS sensors with the optical components semi-integrated with the tuning fork. The design here proposed paves the way to a further level of miniaturization, integration and deployment of QEPAS sensors for application like mobile and on-drone Leggi di piùNew Publication on Journal of Lightwave Technology[…]

The PolySense team has just published  a new article on Photoacoustics Journal Elsevier (IF 5.87)  reporting on a quartz-enhanced photoacoustic spectroscopy (QEPAS) sensor for hydrogen sulfide (H2S) detection, exploiting a liquid-nitrogen-cooled THz quantum cascade laser (QCL) operating in pulsed mode. A QEPAS record sensitivity for H2S detection in the THz range of 360 part-per-billion in volume Leggi di piùNew Publication on Photoacoustics Journal[…]