G - Physics – 01 – N
Patent
G - Physics
01
N
G01N 29/02 (2006.01) G01N 33/487 (2006.01)
Patent
CA 2532835
A surface acoustic wave sensor or identification device has a piezoelectric material, and an interdigitated transducer (IDT) input/output mounted on the piezoelectric material for receiving a radio frequency (RF) signal and propagating a corresponding surface acoustic wave along a surface of the piezoelectric material. An IDT finger electrode array is mounted on the piezoelectric material and is operable to communicate with the IDT input/output for transmission of a modified RF signal from the device. The IDT finger electrode array has at least one finger electrode segment whose propagating characteristics are controlled to control the nature of the modified RF signal. A biolayer is mounted on the piezoelectric material and is associated with the finger electrode segment, and a fluidic chamber is associated with the biolayer. In use, the fluidic chamber contains fluid which, if a predetermined substance to be sensed or detected is present, operates to modify the biolayer which in turn controls the nature of the modified RF signal.
Campbell Colin K.
Edmonson Peter J.
Hunt William D.
Campbell Colin K.
Campbell Vivian Gwyn
Edmonson Peter J.
Gowling Lafleur Henderson Llp
Hunt William D.
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