Differentiation and identification of analogous chemical or biological substances with biosensors
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United States of America Patent
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Jan 26, 2010
Grant Date -
Jun 5, 2008
app pub date -
Oct 24, 2007
filing date -
Mar 25, 2005
priority date (Note) -
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Abstract
An RFID biosensor detection system for detecting particular substances has an interrogator circuit to transmit a radio frequency signal, an input transducer mounted on a piezoelectric material to receive an input radio frequency signal and propagate a corresponding acoustic wave within the piezoelectric material. At least two chemically orthogonal or semi-orthogonal biolayers are mounted on the piezoelectric material to receive substances to be tested and cause corresponding changes in the acoustic wave. An output transducer is mounted on the piezoelectric material to receive the acoustic wave and transmit a corresponding output radio frequency signal. A receiver circuit receives the corresponding output radio frequency signal and provides separate channel data indicative of the substances received.
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