The PolySense team has just published  a new article on Applied Physics Reviews Journal AIP (IF 15) reporting on a sensing system in the realm of long-wavelength infrared spectroscopy for achieving enhanced selectivity and sensitivity of benzene, toluene, and propane detection through quartz-enhanced photoacoustic spectroscopy. High-resolution gas spectroscopy is made possible by the use of Leggi di piùNew Publication on Applied Physics Reviews Journal[…]

The PolySense team has just published  a new article on Photoacoustics Journal Elsevier (IF 7.9)  reporting on a computational and experimental fluid dynamics study for the characterization of the flow field within the gas chamber of a Quartz-Enhanced Photoacoustic Spectroscopy (QEPAS) sensor, at different flow rates at the inlet of the chamber. The transition from Leggi di piùNew Publication on Photoacoustics Journal[…]

The PolySense team has just published  a new article on Light: Science & Applications Journal (IF 19.4) reporting on a long-wave, high-power, wide-tunable, singlelongitudinal- mode solid-state laser used as light source in a PAS sensor for trace gas detection. The wide wavelength tuning range of 9.44 nm covers the absorption spectra of water and ammonia, Leggi di piùNew Publication on Light: Science & Applications Journal[…]

The PolySense team has just published  a new article on Optics and Laser Technology Journal (IF 5) reporting on an optical system embedded within a sealed metallic cylinder containing an aspheric micro-lens to couple a single-mode interband cascade laser with an indium fluoride glass fiber. The fiber output is plug & play connected to an Leggi di piùNew Publication on Optics and Laser Technology Journal[…]

The PolySense team has just published  a new article on Light: Science & Applications Journal (IF 19.4) reporting on an innovative technique of quartz-enhanced multiheterodyne resonant photoacoustic spectroscopy (QEMR-PAS), in which the beat frequency response from a dual comb is frequency down-converted into the audio frequency domain. In this way, gas molecules act as an Leggi di piùNew Publication on Light: Science & Applications Journal[…]

Polysense is proud to communicate that four team members have been listed in the World Scientists Rankings 2024 by AD Scientific Index. The AD Scientific Index (Alper-Doger Scientific Index) is a ranking and analysis system based on the scientific performance and the added value of the scientific productivity of individual scientists, 

The PolySense team has just published  a new article on Photoacoustics Journal Elsevier (IF 7.9)  reporting on an all-fiber-based laser gas analyzer (LGA) employing quartz-enhanced photoacoustics spectroscopy (QEPAS) and a side-polished fiber (SPF). Sensor performance was demonstrated using methane in nitrogen gas mixtures, with CH4 mixing ratios ranging from 75 ppmv to 1% (by volume), measured Leggi di piùNew Publication on Photoacoustics Journal[…]

The PolySense team has just published  a new article on Photoacoustics Journal Elsevier (IF 7.9)  reporting on a photoacoustic sensor for the detection of CO impurities in hydrogen. A DFB-QCL laser with a central wavelength of 4.61 µm was employed as an exciting source with an optical power of 21 mW. The minimum detection limit Leggi di piùNew Publication on Photoacoustics Journal[…]

The PolySense team has just published  a new article on Optics Express Journal reporting on an end-to-end methane gas detection algorithm based on transformer and multi-layer perceptron (MLP) for tunable diode laser absorption spectroscopy (TDLAS). It consists of a Transformer-based U-shaped Neural Network (TUNN) filtering algorithm and a concentration prediction network (CPN) based on MLP. Leggi di piùNew Publication on Optics Express[…]

The PolySense team has just published  a new article on Photoacoustics Journal Elsevier (IF 7.9)  reporting on folded-optics-based quartz-enhanced photoacoustic and photothermal hybrid spectroscopy (FO-QEPA-PTS). In FO-QEPA-PTS, the detection of the photoacoustic and photothermal hybrid signal is achieved through the use of a custom quartz tuning fork (QTF). A multi-laser beam, created by a multi-pass Leggi di piùNew Publication on Photoacoustics Journal[…]