Surface acoustic wave sensor or identification device with biosensing capability
First Claim
1. A surface acoustic wave sensor or identification device having:
- a piezoelectric material, 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 mounted on the piezoelectric material and operable to communicate with the IDT input/output for transmission of a modified RF signal from the device, said IDT finger electrode array having at least one finger electrode segment whose propagating characteristics are controlled to control the nature of the modified RF signal, a biolayer mounted on the piezoelectric material and associated with the finger electrode segment, and a fluidic chamber associated with the biolayer and which in use 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.
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Accused Products
Abstract
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.
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Citations
10 Claims
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1. A surface acoustic wave sensor or identification device having:
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a piezoelectric material, 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 mounted on the piezoelectric material and operable to communicate with the IDT input/output for transmission of a modified RF signal from the device, said IDT finger electrode array having at least one finger electrode segment whose propagating characteristics are controlled to control the nature of the modified RF signal, a biolayer mounted on the piezoelectric material and associated with the finger electrode segment, and a fluidic chamber associated with the biolayer and which in use 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. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10)
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Specification