Oscillator for Biosensors based on Quartz Crystal Microbalance (QCM)

Quartz crystal is generally used in some applications as a microbalance taking advantage of its capacity to change the resonance frequency according to any surface mass change on the resonator. In this way a quartz crystal can be used as a transducer in a piezoelectric inmunosensor system in order t...

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Bibliographic Details
Published in:Revista Facultad de Ingeniería 2011-12 (61), p.114-122
Main Authors: Ferizzola, Yeison Javier Montagut, Narbon, Jose Vicente Garcia, Jimenez, Yolanda Jimenez, Iborra, Carmen March, Baides, Angel Montoya, Villa, Robinson Albertotorres, Vives, Antonio Arnau
Format: Article
Language:Spanish
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Summary:Quartz crystal is generally used in some applications as a microbalance taking advantage of its capacity to change the resonance frequency according to any surface mass change on the resonator. In this way a quartz crystal can be used as a transducer in a piezoelectric inmunosensor system in order to detect antigen-antibody bonds. An interface for Quartz Crystal Microbalances, QCM, based on an improved version of an oscillator in balanced differential configuration and its respective validation as a biosensor characterization system is introduced in this paper. The system was successfully tested in a piezoelectric inmunosensor for detecting the pesticide Carbaryl.
ISSN:0120-6230