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 bubble 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
Vittorio M. N. Passaro
Stefano Dello Russo
11/10/2019. Houston. The PolySense team presented at ASTRO project meeting in Rice University the first QEPAS prototype for sensing-on-drone. The technology will open the way to air pollution monitoring exploiting the potentiality of drone systems.
The PolySense team has just published a new article on Analytical Chemistry reporting on a the realization of a QEPAS sensor for simultaneous dual gas detection of Methane/Nitric Oxide and water vapor with sensitivity down to few ppbs, by simultaneously exciting two in-plane flexural vibrational mode of a custom QTF. The following link provide access Leggi di piùNew publication on Analytical Chemistry Journal[…]
The PolySense team has just published a new article on Sensors and Actuators B Chemical reporting on a the realization of a QEPAS sensor for CH4 detection with vibrational to translational (V-T) relaxation self-calibration via simultaneous detection of water vapor concentration, exploiting a custom QTF operating in both the fundamental and first overtone flexural mode. Leggi di piùNew publication on Sensors and Actuators B Chemical[…]
Prof. Vincenzo Spagnolo, Prof. Lei Dong, Prof. Weidong Chen and Dr. Pietro Patimisco are currently accepting submissions for the upcoming Special Issue titled “Optical Spectroscopy, Sensing, and Imaging from UV to THz Range”, which will be published in Sensors MPDI . The Special Issue belongs to the section “Physical Sensors” and is open to both original Leggi di piùSpecial Issue “Optical Spectroscopy, Sensing, and Imaging from UV to THz Range”[…]
Prof. Spagnolo will give a seminar on May 17th at the Institute of Chemical Technologies and Analytics of the Technical University of Wien on “Quartz-enhanced photoacoustic spectroscopy: basics, merits and new developments”.
The PolySense team has just published a new article on Analytical Chemistry reporting on a the realization of a QEPAS sensor for CO detection with record sensitivity, exploiting an innovative surface grooved QTF. The following link provide access to the article. http://polysense.poliba.it/wp-content/uploads/2019/05/105_acs-analchem_2019.pdf
Prof. Spagnolo will give a seminar on April 2nd at the Shanghai Institute of Technical Physics on “Real-world applications of Quartz-Enhanced Photo Acoustic gas sensing”.
The PolySense team has just published a new article on Spectrochimica Acta A reporting on a the realization of an innovative multi-gas sensor using a tunable Fabry-Perot filter detector. The following link provide access to the article. http://polysense.poliba.it/wp-content/uploads/2019/03/104_FP-filters_spectr.-acta-A_-2019.pdf
OSA Webinar – “Recent Advances in Quartz-Enhanced Photoacoustic Spectroscopy for Gas Sensing Applications”
Professor Vincenzo Spagnolo will present a webinar titled Recent Advances in Quartz-Enhanced Photoacoustic Spectroscopy for Gas Sensing Applications, for OSA – Optical Society of America. The webinar will take place on February 18th 2019 from 10:00am to 11:00am, Eastern Standard Time (16.00pm to 17.00 pm Italian time). To partecipate to this event is required the Leggi di piùOSA Webinar – “Recent Advances in Quartz-Enhanced Photoacoustic Spectroscopy for Gas Sensing Applications”[…]
Prof. Vincenzo Spagnolo has been recognized as a Fellow of SPIE, the International Society for Optics and Photonics for achievements in infrared device physics and optics. This year, SPIE will promote 88 new Fellows of the Society in recognition of those who have made significant scientific and technical contributions in optics, photonics and imaging. Spagnolo’s Leggi di piùProf. Vincenzo Spagnolo awarded with SPIE fellowship[…]