The PolySense team has just published a new article on Photoacoustics Journal Elsevier (IF 9.94) reporting on the development of a ppb-level mid-IR quartz-enhanced photoacoustic sensor for the highly sensitive detection of dimethyl methyl phosphonate (DMMP) —the sarin simulant. A minimum detection limit of 6 ppb was achieved at an integration time of 300 ms, Leggi di piùNew Publication on Photoacoustics Journal[…]
The PolySense team has just published a new article on Advanced Photonics Research journal reporting on a quartz-enhanced photoacoustic spectroscopy sensor architecture capable ofdetecting eight different air pollutants (CH4,NO2,CO2,N2O, CO, NO, SO2, andNH3) . Each analyte is targeted using the same sensor components (acoustic detection module, quartz-tuning fork, etc.) and a dedicated laser source. Both Leggi di piùNew Publication on Advanced Photonics Research[…]
The PolySense team has just published a new article on Micromachines reporting on a theoretical study of the Signal-to-Noise Ratio trend in a voltage-mode read-out of Quartz Tuning Forks (QTFs), mainly focusing on the effects of (i) the noise contributions of both the QTF-equivalent resistor and the input bias resistor RL of the preamplifier, (ii) Leggi di piùNew Publication on Micromachines[…]
The PolySense team has just published a new article on Optics Letters reporting on a side-excitation light-induced thermoelastic spectroscopy (SE-LITES) technique for trace gas detection. The mechanical stress distribution on the QTF surface was analyzed to identify the optimum thermoelastic excitation approach. A signal-to-noise ratio (SNR) improvement of more than one order of magnitude was Leggi di piùNew Publication on Optics Letters[…]
The PolySense team has just published a new article on Photoacoustics Journal Elsevier (IF 9.94) reporting on the development of a gas sensor based on light-induced thermo-elastic spectroscopy (LITES) capable to detect methane (C1) and ethane (C2) in a wide concentration range, from percent down to part-per-billion (ppb). Minimum detection limits of ∼650 ppb and Leggi di piùNew Publication on Photoacoustics Journal[…]
The PolySense team has just published a new article on Photoacoustics Journal Elsevier (IF 9.94) reporting on the development of a highly sensitive hydrogen sulfide (H2S) gas sensor exploiting the doubly resonant photoacoustic spectroscopy technique and using a near-infrared laser emitting at 1578.128 nm. We achieved a minimum detection limit of 10 part per billion Leggi di piùNew Publication on Photoacoustics Journal[…]
The PolySense team has just published a new article on Photoacoustics Journal Elsevier (IF 9.94) reporting on a on a Near-IR quartz-enhanced photoacoustic sensor (QEPAS) for H2S leaks detection in matrixes containing up to 1 % of methane (CH4). An investigation of the influence of CH4 on H2S relaxation and photoacoustic generation was proposed in this Leggi di piùNew Publication on Photoacoustics Journal[…]
The PolySense team has just published a new article on Optics Express reporting on incubation effect on the laser ablation threshold of quartz, after multi-shot irradiation with femtosecond pulses. A strong decrease of the multi-pulse ablation threshold with the number of pulses was found due to incubation. Moreover, the influence of the repetition rate was Leggi di piùNew Publication on Optics Express[…]
Polysense is proud to communicate that three team members have been listed for the third year in a row in the Top 2% Scientists list in the world by Stanford University. In particular, Professor Vincenzo Spagnolo has been listed in the full career Top 2% Scientists list. while Professors Vincenzo Spagnolo, Pietro Patimisco and Angelo Leggi di piùPolysense Team members listed in the 2021 Top 2% Scientists in the world by Stanford University[…]
The PolySense team has just published a new article on Sensors and Actuators B Chemical Journal Elsevier (IF 9.221) reporting on a on a 19-inches 6U-rack sensing system based on quartz-enhanced photoacoustic spectroscopy for simultaneous detection of methane, nitrous oxide, and ammonia in atmosphere. The system embeds two detection modules, each one equipped with a Leggi di piùNew Publication on Sensors and Actuators B Chemical Journal[…]