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[…]
The PolySense team has just published a new article on Photoacoustics Journal Elsevier (IF 7.9) reporting on the novel employment of lithium niobate tuning forks as acoustic transducers in photoacoustics spectroscopy for gas sensing. The lithium niobate tuning fork (LiNTF) exhibits a fundamental resonance frequency of 39196.6 Hz and a quality factor Q = 5900 Leggi di piùNew Publication on Photoacoustics Journal[…]