Method and apparatus for the quantitative analysis of a liquid sample with surface enhanced spectroscopy
First Claim
1. A device for testing a biological liquid sample for the presence or concentration of an analyte comprising:
- (a) a substrate defining a surface which has electrically conductive particles disposed thereon, wherein the surface is adapted to accommodate the liquid sample;
(b) means for generating radiation and directing the radiation to be incident on said surface of the substrate so that radiation is emitted from the electrically conductive particles; and
(c) means for detecting the emitted radiation.
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Accused Products
Abstract
Surface-enhanced spectroscopy for quantitative analysis of analytes in biological liquid samples. A device for testing a biological liquid sample for the presence or concentration of an analyte includes: (a) a substrate defining a surface which has electrically conductive particles disposed thereon, wherein the surface is adapted to accommodate the liquid sample; (b) means for generating radiation and directing the radiation to be incident on said surface of the substrate so that radiation is emitted from the electrically conductive particles; and (c) means for detecting the emitted radiation. In another embodiment a matrix having electrically conductive particles that are incorporated in the matrix or that are disposed on a surface thereof, wherein the matrix is permeable to the liquid biological sample is used in place of the substrate. The device is particularly suited for determining glucose in human whole blood.
94 Citations
52 Claims
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1. A device for testing a biological liquid sample for the presence or concentration of an analyte comprising:
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(a) a substrate defining a surface which has electrically conductive particles disposed thereon, wherein the surface is adapted to accommodate the liquid sample;
(b) means for generating radiation and directing the radiation to be incident on said surface of the substrate so that radiation is emitted from the electrically conductive particles; and
(c) means for detecting the emitted radiation. - 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, 25, 26, 27, 28, 29, 30, 31, 32, 33, 34, 35, 36, 37, 38, 39, 40, 41, 42, 43, 44, 45, 46, 48, 49)
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24. A device for testing a liquid biological sample for the presence or concentration of an analyte comprising:
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(a) a matrix having electrically conductive particles that are incorporated in the matrix or that are disposed on a surface thereof, wherein the matrix is permeable to the liquid biological sample;
(b) means for generating radiation and directing the radiation to be incident on matrix so that radiation is emitted from the electrically conductive particles; and
(c) means for detecting radiation that is emitted from the metal particles.
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47. A method of testing a liquid biological sample for the presence or concentration of an analyte that comprises the steps of:
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(a) contacting the sample to electrically conductive particles to cause analytes present in the sample to be associated with the particles;
(b) irradiating the particles with radiation to cause Raman scattering to occur in the presence of the analyte; and
(c) detecting Raman-scattered radiation from the emitted analyte in response to the irradiation.
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50. A method of testing a liquid biological sample for the presence or concentration of an analyte that comprises the steps of:
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(a) contacting the sample to electrically conductive particles to cause analytes present in the sample to be associated with the particles;
(b) irradiating the particles with radiation having a wavelength such that infrared radiation absorption occurs in the presence of the analyte; and
(c) detecting radiation emitted from the particles in response to the irradiation. - View Dependent Claims (51, 52)
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Specification