Chemically-selective detector and methods relating thereto
First Claim
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1. A method for adjusting the spectral detectivity of a detector, comprising:
- coating the detector with a first material to reduce a response of the detector to light;
coating the first material with a second material that has a spectral absorbance; and
coating the second material with a third material, such that the spectral detectivity has a reduced contrast between a sample comprising a pure analyte and a sample comprising an interfering absorbance,whereby the spectral absorbance of the second material combined with a spectral absorbance of the third material primarily determines a sensitivity of the detector; and
wherein the detector is configured to detect an energy from the second material and not from the third material.
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Abstract
In accordance with certain embodiments of the present disclosure, a method for adjusting the spectral detectivity of a thermal detector is described. The method includes coating the light sensitive portion of a thermal detector with a first material to reduce the response of the detector. The first material is coated with a second material that is thermally thin and has spectral absorption characteristics. The second material is coated with a third material that is thermally thick, whereby the spectral absorbance of the second material as filtered by the third material primarily determines the thermal conversion of the thermal detector.
229 Citations
29 Claims
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1. A method for adjusting the spectral detectivity of a detector, comprising:
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coating the detector with a first material to reduce a response of the detector to light; coating the first material with a second material that has a spectral absorbance; and coating the second material with a third material, such that the spectral detectivity has a reduced contrast between a sample comprising a pure analyte and a sample comprising an interfering absorbance, whereby the spectral absorbance of the second material combined with a spectral absorbance of the third material primarily determines a sensitivity of the detector; and wherein the detector is configured to detect an energy from the second material and not from the third material. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18, 19, 20, 21, 22)
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23. A detector, comprising:
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a layer of light reflecting material disposed on at least a portion of a light sensitive material; a layer of spectral absorption material covering the light reflecting material; and a layer of filter material covering the spectral absorption material such that the spectral detectivity has a reduced contrast between a sample comprising a pure analyte and a sample comprising an interfering absorbance, wherein the detector is coupled to detect an energy from the spectral absorption material and not from the filter material. - View Dependent Claims (24, 25, 26, 27, 28)
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29. A method of detecting the presence of a fluid, comprising:
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receiving light in a detector to detect a fluid, the light containing information about a fluid, the detector comprising a light sensitive detector material, a layer of light reflecting material covering at least a portion of the light sensitive material, a layer of spectral absorption material covering the light reflecting material, and a layer of filter material covering the spectral absorption material;
wherein the layer of filter material has a thickness such that the spectral detectivity has a reduced contrast between a sample comprising a pure analyte and a sample comprising an interfering absorbance; andthe detector is configured to detect an energy from the second material and not from the third material.
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Specification