Biosensor utilizing a resonator having a functionalized surface
First Claim
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1. A device comprising:
- a resonator;
wherein the resonator has at least one functionalized surface, wherein the functionalized surface is configured to react with target molecules.
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Abstract
Systems and methods for detecting the presence of biomolecules in a sample using biosensors that incorporate resonators which have functionalized surfaces for reacting with target biomolecules. In one embodiment, a device includes a piezoelectric resonator having a functionalized surface configured to react with target molecules, thereby changing the mass and/or charge of the resonator which consequently changes the frequency response of the resonator. The resonator'"'"'s frequency response after exposure to a sample is compared to a reference, such as the frequency response before exposure to the sample, a stored baseline frequency response or a control resonator'"'"'s frequency response.
68 Citations
30 Claims
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1. A device comprising:
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a resonator;
wherein the resonator has at least one functionalized surface, wherein the functionalized surface is configured to react with target molecules. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18, 19, 20, 21, 22, 23, 24)
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25. A. system comprising:
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a layer of piezoelectric material, wherein the layer of piezoelectric material has at least one surface that is functionalized to bind with target molecules a pair of electrodes coupled to the layer of piezoelectric material control circuitry configured to apply an excitation signal to the pair of electrodes and to determine a frequency response for the layer of piezoelectric material
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26. A system comprising:
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a pair of film bulk acoustic resonators (FBARs), including a test FBAR and a reference FBAR, wherein each FBAR includes a layer of piezoelectric material a pair of electrodes coupled to opposite sides of the layer of piezoelectric material;
wherein an exposed surface of one of the electrodes of the test FBAR is functionalized with biomolecules;
further comprising control circuitry coupled to the pair of FBARs and configured to determine frequency responses for the test FBAR and reference FBAR.
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27. A method for detecting target molecules comprising:
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providing a first resonator, wherein the first resonator has a first surface functionalized with a first type of biomolecules, wherein the presence of target molecules causes the first type of biomolecules to change the frequency response of the first resonator;
exposing the first surface of the first resonator to a test fluid;
determining a frequency response of the first resonator after the first surface has been exposed to the test fluid; and
determining, based upon the frequency response of the first resonator, whether the test fluid contained target molecules. - View Dependent Claims (28, 29, 30)
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Specification