Title :
A chloroform transducer based sPS-δe-coated crystal microbalance
Author :
Arpaia, Pasquale ; Guerra, Gaetano ; Mensitieri, Giuseppe ; Moriello, Rosario Schiano Lo
Author_Institution :
Dept. of Eng., Univ. of Sannio, Benevento, Italy
fDate :
6/24/1905 12:00:00 AM
Abstract :
A prototype quartz crystal microbalance-based transducer is proposed for in-situ measurements of very-low chloroform activity. The sensing element consists of a syndiotactic polystyrene thin film sprayed on the piezoelectric quartz electrode of the microbalance. Chloroform adsorption and desorption in the film give rise to a mass variation implying a related variation in the resonance frequency of the crystal. Static and dynamic metrological characterizations of the sensor prototype were carried out at varying chloroform activity and temperature levels. Satisfactory sensitivity, repeatability, and dynamic hysteresis were highlighted.
Keywords :
chemical sensors; crystal resonators; microbalances; piezoelectric transducers; polymer films; QCM; SiO2; chloroform activity in-situ measurement; chloroform adsorption; chloroform desorption; chloroform transducer; crystal resonance frequency variation; microbalance piezoelectric quartz electrodes; sensor static metrological characterization; sensor temperature characteristics; syndiotactic polystyrene thin film sensing element; syndiotactic polystyrene-coated quartz crystal microbalance; thin film mass variation; transducer dynamic characterization; transducer dynamic hysteresis; transducer repeatability; transducer sensitivity; Electrodes; Hysteresis; Piezoelectric films; Piezoelectric transducers; Prototypes; Resonance; Resonant frequency; Sensor phenomena and characterization; Spraying; Temperature sensors;
Conference_Titel :
Instrumentation and Measurement Technology Conference, 2002. IMTC/2002. Proceedings of the 19th IEEE
Print_ISBN :
0-7803-7218-2
DOI :
10.1109/IMTC.2002.1007108
