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.
EU Project OPTAPHI 2020-2023
The OPTAPHI Postgraduate Training Network aims to train doctoral students in the complementary fields of advanced spectroscopy and integrated optics. Specifically, the focus is on the methods of photo-acoustic and photo-thermal spectroscopy, and their integration with compact semiconductor lasers.
EU PROJECT PASSEPARTOUT 2021-2024
PASSEPARTOUT will advance the development and deployment of miniature, optical based sensors based on Quartz Enhanced Photo-acoustic Spectroscopy and Photo-Thermal Interferometry for a wide range of ambient pollutants. PASSPARTOUT will realize the first 3D mobile optical gas analyser network capable of operating in an urban area exploting on drone-mounted, vehicle-mounted and stationary sensors. (NOx, SO2, NH3, CH4, CO, CO2) and black carbon within urban areas, around landfills and seaports with extremely high precision and good spatial resolution.
Quartz tuning forks photodetectors
Quartz tuning forks as a narrow-bandwidth (∼1 Hz), fast-response (tens of kHz), broadband, high-responsivity infrared photodetectors, suitable for tunable laser-based absorption spectroscopy.
PNNR Project BRIEF 2022-2026
In the framework of the PNRR Infrastructure Project “Biorobotics Research and Innovation Engineering Facilities” – BRIEF, the BBC – Breath Biomarkers Chemical identification Laboratory (including a mass spectrometer + Gas chromatography system) and the BIOS2 – Biomarkers Infrared Spectroscopy and Sensing Laboratory will be realized and exploited for Breath Sensing of several pathologies, including Colon and Lung Cancer.
NRRP Project D3-4-Health 2022-2026
In the framework of the National Plan for NRRP Complementary Investments D3-4-Health – ” Digital Driven Diagnostics, prognostics and therapeutics for sustainable Health care” project, we will realise optical breath sensing system for pathologies like Metastatic colon cancer, Liver and bile duct cancer and Diabetes type I.
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.
Polysense Innovations srl
PolySenSe Innovations is a spin-off company of the Polytechnic of Bari, devoted to the development of optical-based sensors, technical training for companies, and to find solution to strategic problems.
Vincenzo Luigi Spagnolo
Michele Di Gioia
Raffaele De Palo
New Publication on Micromachines
The PolySense team has just published a new article on Micromachines reporting on a theoretical study of the Signal-to-Noise Ratio trend in a voltage-mode read-out of Quartz Tuning Forks (QTFs), mainly focusing on the effects of (i) the noise contributions of both the QTF-equivalent resistor and the input bias resistor RL of the preamplifier, (ii) Leggi di piùNew Publication on Micromachines[…]
New Publication on Optics Letters
The PolySense team has just published a new article on Optics Letters reporting on a side-excitation light-induced thermoelastic spectroscopy (SE-LITES) technique for trace gas detection. The mechanical stress distribution on the QTF surface was analyzed to identify the optimum thermoelastic excitation approach. A signal-to-noise ratio (SNR) improvement of more than one order of magnitude was Leggi di piùNew Publication on Optics Letters[…]
New Publication on Photoacoustics Journal
The PolySense team has just published a new article on Photoacoustics Journal Elsevier (IF 9.94) reporting on the development of a gas sensor based on light-induced thermo-elastic spectroscopy (LITES) capable to detect methane (C1) and ethane (C2) in a wide concentration range, from percent down to part-per-billion (ppb). Minimum detection limits of ∼650 ppb and Leggi di piùNew Publication on Photoacoustics Journal[…]
New Publication on Photoacoustics Journal
The PolySense team has just published a new article on Photoacoustics Journal Elsevier (IF 9.94) reporting on the development of a highly sensitive hydrogen sulfide (H2S) gas sensor exploiting the doubly resonant photoacoustic spectroscopy technique and using a near-infrared laser emitting at 1578.128 nm. We achieved a minimum detection limit of 10 part per billion Leggi di piùNew Publication on Photoacoustics Journal[…]
New Publication on Photoacoustics Journal
The PolySense team has just published a new article on Photoacoustics Journal Elsevier (IF 9.94) reporting on a on a Near-IR quartz-enhanced photoacoustic sensor (QEPAS) for H2S leaks detection in matrixes containing up to 1 % of methane (CH4). An investigation of the influence of CH4 on H2S relaxation and photoacoustic generation was proposed in this Leggi di piùNew Publication on Photoacoustics Journal[…]
New Publication on Optics Express
The PolySense team has just published a new article on Optics Express reporting on incubation effect on the laser ablation threshold of quartz, after multi-shot irradiation with femtosecond pulses. A strong decrease of the multi-pulse ablation threshold with the number of pulses was found due to incubation. Moreover, the influence of the repetition rate was Leggi di piùNew Publication on Optics Express[…]
Polysense Team members listed in the 2021 Top 2% Scientists in the world by Stanford University
Polysense is proud to communicate that three team members have been listed for the third year in a row in the Top 2% Scientists list in the world by Stanford University. In particular, Professors Vincenzo Spagnolo have been listed in the full career Top 2% Scientists list. while Professors Vincenzo Spagnolo, Pietro Patimisco and Angelo Leggi di piùPolysense Team members listed in the 2021 Top 2% Scientists in the world by Stanford University[…]
New Publication on Sensors and Actuators B Chemical Journal
The PolySense team has just published a new article on Sensors and Actuators B Chemical Journal Elsevier (IF 9.221) reporting on a on a 19-inches 6U-rack sensing system based on quartz-enhanced photoacoustic spectroscopy for simultaneous detection of methane, nitrous oxide, and ammonia in atmosphere. The system embeds two detection modules, each one equipped with a Leggi di piùNew Publication on Sensors and Actuators B Chemical Journal[…]
Polysense phD students won the award for the best technical-engineering project at the Prix Italia 2022, Yab Rai 2022 section.
PolySense is pleased to announce that phD students Gabriele Biagi, De Palo Raffaele, Michele Di Gioia, Mariagrazia Olivieri, Francesco Paciolla have won the award for the best technical-engineering project entitled “Sustainable hospital microclimate” as part of the Prix Italia 2022, Yab Rai 2022 section. The project presented proposes an innovative and compact system of automated Leggi di piùPolysense phD students won the award for the best technical-engineering project at the Prix Italia 2022, Yab Rai 2022 section.[…]
New Publication on Frontiers in Environmental Chemistry
The PolySense team has just published a new article on Frontiers in Environmental Chemistry Journal (IF 4.927) reporting on a photoacoustic detection module based on a gold-plated photoacoustic cell aimed to measure hydrogen sulfide (H2S) gas in sewers. A 1582 nm distributed feedback (DFB) diode laser was employed as the excitation light source of the photoacoustic Leggi di piùNew Publication on Frontiers in Environmental Chemistry[…]