Patent ID: 7964144

Claim:
A biosensor device ( 1 ) providing an analysis platform for detecting cell growth, comprising of: an aluminium nitride (AlN) base ( 2 ) coupled with a piezoelectric thin film; a shear horizontal-surface acoustic wave (SH-SAW) resonator including an input transducer ( 4 ) and an output transducer ( 5 ) symmetrically positioned on the aluminum nitride (AlN) base ( 2 ); a counter electrode ( 6 ) positioned parallel to working electrodes ( 7 ) on the aluminum nitride (AlN) base ( 2 ), for transmitting frequency voltage towards the living cell ( 3 ) and is electrically connected to an impedance analyzer ( 8 ); a plurality of working electrodes ( 7 ) positioned beneath the living cell ( 3 ) on the aluminium nitride (AlN) base ( 2 ) for receiving frequency voltage from the living cell ( 3 ) and are electrically connected to an impedance analyzer ( 8 ); an impedance analyzer ( 8 ) for receiving impedance readings from the counter electrode ( 6 ) and working electrodes ( 7 ); and a back-etched silicon substrate ( 9 ) coupled to the aluminium nitride (AlN) base ( 2 ), for reducing current loss; wherein the living cell ( 3 ) is positioned in between the input transducer ( 4 ) and output transducer ( 5 ) on the aluminium nitride (AlN) base ( 2 ).