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
Stefano Dello Russo
The PolySense team has just published a new article on Sensors and Actuators B Chemical journal reporting on a methane, ethane and propane quartz-enhanced photoacoustic sensor employing a single interband cascade laser source. The following link provide access to the article. http://polysense.poliba.it/wp-content/uploads/2018/12/100_C1-C2-C2-QEPAS_Sens-Act-B_2018.pdf
Invited Seminar of Prof. Spagnolo at the Dept. of Material Science & Engineering – University of Texas at Dallas
Prof. Spagnolo on December 7th will give a seminar at the Department of Material Science & Engineering of University of Texas at Dallas on “Recent Advances in Design, Realization and Testing of Custom Quartz Tuning Forks for Gas Sensing Applications”.
The PolySense Team has participated to the 2018 edition of the “Salone dello Studente” in Rome 13-15 November as representative of the Technical University of Bari.
Prof. Spagnolo has given a talk on October 26th at the Shanghai Institute of Technical Physics on “Quartz-Enhanced Photo Acoustic Spectroscopy, basics, merits and recent advances”.
The PolySense team has just published a new article on Applied Physics Letters journal reporting on a nitrous oxide quartz-enhanced photoacoustic detection employing a broadband distributed-feedback quantum cascade laser array. The following link provide access to the article. http://polysense.poliba.it/wp-content/uploads/2018/10/96_OL_octupole_2018.pdf
The PolySense team has just published a new article on IEEE TRANSACTIONS ON ULTRASONICS, FERROELECTRICS, AND FREQUENCY CONTROL journal reporting on the main loss mechanisms determining the quality factors in quartz tuning forks vibrating at the fundamental and first overtone modes. The following link provide access to the article. http://polysense.poliba.it/wp-content/uploads/2018/10/98_IEEE_trans_Q-factor_2018.pdf
Prof. Vincenzo Spagnolo, director of the PolySense Lab on July 27th 2018 has been awarded with the “Premio Re Manfredi” . This reward is conferred due to the large number of collaboration managed by Prof. Spagnolo with prestigious University, Research centers and Industries located in USA, Cina, Singapore and Europe.
Prof. Vincenzo Spagnolo, director of the PolySense Lab on May 19th 2018 has been granted with the “Terra del Sole AWARD”. This reward is conferred every year to talent and prominent personalities from Puglia distinguished in their field and able to establish themselves in Italy and abroad thanks to creativity, skill, intuit.
The PolySense team has just published a new article on Sensors and Actuators B Chemical journal reporting on a novel trace gas sensor exploiting fiber-ring laser intracavity quartz-enhanced photoacoustic spectroscopy. The following link provide access to the article. http://polysense.poliba.it/wp-content/uploads/2018/05/97_FLY-QEPAS_-Sens-Act-B_2018.pdf
The PolySense team has just published a new article on Optics Letters journal reporting the new advances in Quartz-enhanced photoacoustics spectroscopy exploiting quartz tuning fork overtone mode operation. The following link provide access to the article. http://polysense.poliba.it/wp-content/uploads/2018/04/96_OL_octupole_2018.pdf