Evaluation of static measurement in piezoelectric cantilever sensors using a charge integration technique for chemical and biological detection

In this paper, we introduce a charge integrator as a read-out system for piezoelectric cantilever sensors. The charge integrator is used to monitor the surface charge induced by piezoelectric materials as a function of mechanical stress. This technique improves the response of piezoelectric cantilever sensors in low-frequency measurements, which makes them suitable for chemical and biological detection. Furthermore, it is capable of real-time, portable and all-electrical detection. The detection of alkanethiols on the Au-coated piezoelectric cantilevers is demonstrated to verify the concept.


Published in:
Journal of Measurement Science and Technology, 21, 7, 075801-075809
Year:
2010
Keywords:
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 Record created 2010-06-02, last modified 2018-03-17


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