The PolySense team has just published a new article on Photoacoustics Journal Elsevier (IF 5.87) demonstrating that quartz-enhanced photoacoustic spectroscopy (QEPAS) is an efficient tool to measure the vibrational relaxation rate of gas species, employing quartz tuning forks (QTFs) as sound detectors. The following link provide access to the article. http://polysense.poliba.it/wp-content/uploads/2020/12/124_Relaxation-rate-_photoacoustics_2020.pdf
The PolySense team has just published a new article on Molecules journal reporting on the realization of an innovative near-IR sensor exploiting a novel fiber-coupled ADM and a custom fiber combiner for sequential detection of methane and ethane in air. A minimum detection limit of 0.76 ppm for methane and 34 ppm for ethane at 100 Leggi di piùNew publication on Molecules[…]
Prof. Vincenzo Spagnolo, Prof. Lei Dong, Prof. Yufei Ma, Prof. Pietro Patimisco and Prof. Frank K. Tittel are currently accepting submissions for the upcoming Special Issue titled “Photoacoustic spectroscopy for gas sensing: from theoretical modeling to applications”, which will be published in Photoacoustics Journal Elsevier (Impact Factor: 5.870). You can find the Call for Papers at the following link: https://www.journals.elsevier.com/photoacoustics/call-for-papers/photoacoustic-spectroscopy-for-gas-sensing
The PolySense team has just published a new article on Analytical Chemistry journal reporting on the realization of a highly sensitive sensor for detection of carbon monoxide (CO) in sulfur hexafluoride (SF6). A novel custom T-shaped quartz tuning fork (QTF) with grooved prongs operating at 8 kHz has been implemented. A minimum detection limit of Leggi di piùNew publication on Analytical Chemistry Journal[…]
Professor Vincenzo Spagnolo will present a webinar titled New developments in quartz-enhanced photoacoustic sensing real-world applications, for THORLABS Webinar Series. The webinar will take place on September 10th 2020 from 12:00am to 13:00am, Eastern Standard Time (18.00pm to 19.00 pm Italian time). To partecipate to this event is required the registration at the following link: https://www.eventbrite.com/e/utilizing-qepas-for-gas-sensing-applications-tickets-115512251253?aff=ThorlabsWebpage Leggi di piùTHORLABS Webinar Series- “New developments in quartz-enhanced photoacoustic sensing real-world applications”[…]
The PolySense team has just published a new article on Analytical Chemistry journal reporting on a statistical tool based on partial least squares regression (PLSR) able to retrieve single-component concentrations in a multiple-gas mixture characterized by spectrally overlapping absorption features exploiting QEPAS spectroscopy. The following link provide access to the article. http://polysense.poliba.it/wp-content/uploads/2020/07/121_acs.analchem.PLS_2020.pdf
The PolySense team has just published a new article on Optics Express demonstrating an ultra-highly sensitive and robust CH4 sensor based on a 3.3 μm interband cascade laser and a low-noise differential photoacoustic (PAS) cell. With an integration time of 90 s, a detection limit of 0.6 ppb was achieved. No additional water or air laser Leggi di piùNew Publication on Optics Express[…]
The PolySense team has just published a new article on Optics Express demonstrating the possibility to use QTFs as photodetectors in a TDLAS sensor, exploiting the light induced thermo-elastic effect occurring when the laser light hits a QTF surface. In the best experimental conditions, QTF as light detector showed an SNR 6.5 times higher than that Leggi di piùNew Publication on Optics Express[…]
The PolySense team has just published a new article on Fuel – Elsevier reporting on the realization of a shoe-box sized quartz-enhanced photoacoustic spectroscopy system capable of: i) selective detection of methane and ethane in the parts-per-billion range, and propane in the parts-per-million range, by employing a single interband cascade laser ; ii) selective detection Leggi di piùNew Publication on Fuel – Elsevier[…]
The PolySense team has just published a new article on Sensors reporting on a the realization of a dual-gas sensor based on the combination of a quartz-enhanced photoacoustic spectroscopy (QEPAS) sensor and an electronic hygrometer was realized for the simultaneous detection of methane (CH4) and water vapor (H2O) in air. The sensor was tested by Leggi di piùNew Publication on Sensors[…]