Abstract
Most gravimetric biosensors use thin piezoelectric quartz crystals (quartz crystal microbalance, QCM), either as resonating crystals, or as bulk/surface acoustic wave (SAW) devices. This paper illustrates a related technique where a polymer film system made of two different types of the polymer polyvinylidene difluoride (PVDF) are used: one has piezoelectric properties and the other has a high protein binding capacity. Acoustic waves are launched in this polymer film to produce an oscillatory resonant device. This device is being tested in protein detection. Current work and preliminary results are presented.
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