NOESIS: A nitric oxide exhaled sensor integrated system

This work describes the results of a handheld sensor system for monitoring exhaled nitric oxide. The device was developed during a framework of 3-year national project “NOESIS” in cooperation with an Italian SME (Medical International Research S.r.l.). In this apparatus a conductive sensor based on titania nanofibers coated with an ultra-thin film of PEDOT:PSS is capable of detecting up to 5 ppb of NO gas. The sensor system implements a smart recirculation measurement methodology to comply recommendations of the American Thoracic Society and European Respiratory Society about the medical instrumentations devoted to monitor and diagnose the respiratory inflammations. Such implemented system executes the measure in 90 seconds, with an exhalation time of about 10 seconds.