The PolySense team has just published  a new article on Light: Advanced Manufacturing Journal reporting on the development of a laser surface functionalization process to enhance the optical absorption of quartz crystals, named hereafter Black Quartz, in the 1-5 µm spectral range. Black Quartz consists of surface modification of quartz crystal by ultra-fast-pulsed-laser-processing to create Leggi di piùNew Publication on Light: Advanced Manufacturing[…]

The PolySense team has just published  a new review article on Measurement Journal Elsevier (IF 5.2)  on a formaldehyde gas detection using optical sensing. In this review, the laser-based spectroscopic techniques for formaldehyde detection were investigated, such as cavity ring-down spectroscopy (CRDS), cavity-enhanced absorption spectroscopy (CEAS), integrated cavity output spectroscopy (ICOS), tunable diode laser absorption Leggi di piùNew Publication on Measurement Journal[…]

The PolySense team has just published  a new article on Sensors Journal MPDI (IF 3.4)  reporting on a multi-gas sensor for greenhouse detection based on QEPAS. The sensor exploits an innovative, compact three-wavelength laser module as excitation source. The module integrates three interband cascade laser chips with a beam combining system, all enclosed in a Leggi di piùNew Publication on Sensors Journal[…]

The PolySense team has just published  a new article on Photoacoustics Journal Elsevier (IF 7.1)  reporting on a novel optical synchronized signal demodulation (OSSD) method applied in quartz-enhanced photoacoustic spectroscopy (QEPAS) for remote gas sensing. Using 1 % of the laser source as an optical syn chronization signal, kilometer-scale remote gas detection was achieved, overcoming Leggi di piùNew Publication on Photoacoustics Journal[…]

The PolySense team has just published  a new article on Sensors and Actuators B Chemical Journal Elsevier (IF 8.0)  reporting on a quartz-enhanced photoacoustic spectroscopy (QEPAS) sensor for ammonia impurities detection in hydrogen. A quantum cascade laser with a central emission wavelength of 9.062 μm was used to excite the NH3 absorption line at 1103.44 cm−1, with Leggi di piùNew Publication on Sensors and Actuators B Chemical Journal[…]

The PolySense team has just published  a new article on Photoacoustics Journal Elsevier (IF 7.1)  reporting on a novel indium fluoride glass 2-input-1-output fiber combiner, that was designed and fabricated to combine two Interband Cascade Laser (ICL) sources emitting in the mid-infrared wavelength range. To test the combiner performance, a dual-gas quartz-enhanced photoacoustic spectroscopy sensor Leggi di piùNew Publication on Photoacoustics Journal[…]

The PolySense team has just published  a new article on ACS Energy&Fuels journal reporting on a compact and portable gas sensor based on quartz-enhanced photoacoustic spectroscopy (QEPAS) for the detection of methane (C1), ethane (C2), and propane (C3) in natural gas (NG)-like mixtures. An interband cascade laser (ICL) emitting at 3367 nm has been employed Leggi di piùNew publication on ACS Energy & Fuels journal[…]

The PolySense team has just published  a new article on International Journal of Hydrogen Energy – Elsevier (IF 9.1)  reporting on a custom quartz tuning fork (QTF) as sensor for the detection of high concentrations of hydrogen in air. Exciting the fundamental flexural mode of a commercially available 12.4 kHz-QTF, we demonstrated the linear dependence Leggi di piùNew Publication on International Journal of Hydrogen Energy[…]