Our Research activities
Compact acoustic detection modules
Realization of compact acoustic detection module including a custom-made quartz tuning fork and micro-resonator system, optical access via two windows and gas in and out connections.
Custom-made tuning forks and micro-resonators
Custom-made quartz tuning fork properly designed and realized to offer high performance for QEPAS sensors, in terms of quality factor and electrical charges collection efficiency.
Fiber-coupled mid-IR QEPAS Sensors
Fiber-optic components are key enabling technologies to improve the robustness and effectiveness of QEPAS sensors in terms of flexible beam guidance and compactness.
Cavity-Enhanced QEPAS Sensors
Ultra-sensitive and selective QEPAS sensors combined with high-finesse optical cavities can increase the detection sensitivity up to two orders of magnitude.
THz QEPAS SENSORS
High sensitivity THz molecular spectroscopy is crucial for the study of chemical processes related to ozone depletion and global warming, as well as direct identification of explosives and drugs.
Trace gas sensors are the heart of any monitoring system in industrial and urban areas. Real-time and in-situ QEPAS-based monitoring systems are crucial to ensure an environmentally sustainable territorial development.
Exhaled breath biomarkers have particular clinical appeal offering non-invasive medical diagnostics. Dedicated QEPAS sensors can be used as repeatable, continuous and real-time breath analysis tool.
Gas Leak detection is a critical problem for several applications requiring hermetically closed areas. QEPAS-based leak sensors are several orders of magnitude more sensitive than a buble test or helium sniffer.
Portable Quartz enhanced photoacoustic sensors (QEPAS) system are capable to detect in situ methane, ethane, propane and butane in gas phase, with detection limits in the few part-per-million concentration range.
Monitoring of hotspot areas
Certain chemicals can be used in the illicit manufacture of explosives or to cause harm. Quartz enhanced photoacoustic sensors (QEPAS) system are capable to detect toxic gases and explosive precursors down to few part-per-million concentration range.
Vincenzo Luigi Spagnolo
The PolySense team has just published a new article on Applied Physics Review journal reporting the new advances in Quartz-enhanced photoacoustics spectrscopy . The following link provide access to the article. http://polysense.poliba.it/wp-content/uploads/2018/03/95_App-Phy-Rev_QEPAS-review_2018.pdf
The PolySense team is proud to present the first QEPAS sensor Prototype realized in collaboration with THORLBAS at Photonics West 2018 EXPO.
The PolySense team will participate to the forthcoming Photonics West 2018 Conference (San Francisco 2018) with 4 presentations devoted to: Recent advances in quartz-enhanced photoacoustic sensing; Interband cascade laser based Quartz Enhanced Photoacoustic sensor for multiple hydrocarbons detection; Compact and low-noise quartz-enhanced photoacoustic sensor for sub-ppm ethylene detection in atmosphere; Tapered hollow-core fibers providing single-mode Leggi di piùPhotonics West 2018[…]
The PolySense team has just published on the Sensors and Actuators A: Physical a new article on the realization of a build-up cavity for applications in intracavity-QEPAS systems. The following link provide access to the article. http://polysense.poliba.it/wp-content/uploads/2018/02/94_I-QEPAS-Sens-Act-A_2017.pdf
The PolySense team has just published on the Optical Engineering international journal a new article on the optical coupling of tapered hollow core waveguides. The article can be downloaded at the following link: http://polysense.poliba.it/wp-content/uploads/2018/02/93_OE-tapered-HCW_2017.pdf
The PolySense team will participate to the forthcoming OSA Topical Meeting on 2017 PSA Topical Meeting on “Optical Instrumentation for Energy and the Environment” (E2) in Boulder (USA), with an invited presentation devoted to “Recent advances in quartz enhanced photoacoustic sensing“
The PolySense team will participate to the forthcoming 8th International Conference and Exhibition on Lasers, Optics & Photonics (LAS VEGAS 2017) with an invited presentation devoted to “New developments in quartz enhanced photoacoustic sensors exploiting custom quartz tuning forks“
The PolySense team will participate to the forthcoming CLEO EUROPE 2017 conference in Munich with an oral presentation devoted to “Recent Advances in Quartz-Enhanced Photoacoustic Sensors Employing Custom Tuning Fork Operating At The First Overtone Flexural Mode”
The PolySense team will participate to the PIERS 2017 conference in San Petersburg with two invited talks devoted to “Recent advances in quartz enhanced photoacoustic sensors exploiting custom tuning forks” and “Quartz-enhanced Photoacoustic Sensing Operating in Pure Amplitude and Wavelength Modulation with a 3-section Quantum Cascade Laser” Prof. Vincenzo Spagnolo will also organize a special session in collaboration Leggi di piùPIERS 2017[…]