Colloidal particles used in sensing array
First Claim
1. A device for detecting a chemical analyte, said device comprising:
- a measuring apparatus;
a sensor array connected to the measuring apparatus having at least one sensor comprising a film comprising alternating electrically conductive and electrically non-conductive regions that reversibly interact with an analyte to be detected, wherein said conductive regions comprise a nanoparticle and said nonconductive regions comprise a nonconductive cap on the nanoparticle attached by an alkanethiol linkage, wherein the non-conductive cap is an insulating organic polymer, anda response path through the film of said nonconductive and said conductive regions.
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Accused Products
Abstract
Chemical sensors for detecting analytes in fluids comprising a plurality of alternating nonconductive regions (comprising a nonconductive material) and conductive regions (comprising a conductive material). In preferred embodiments, the conducting region comprises a nanoparticle. Variability in chemical sensitivity from sensor to sensor is provided by qualitatively or quantitatively varying the composition of the conductive and/or nonconductive regions. An electronic nose for detecting an analyte in a fluid may be constructed by using such arrays in conjunction with an electrical measuring device electrically connected to the conductive elements of each sensor.
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Citations
23 Claims
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1. A device for detecting a chemical analyte, said device comprising:
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a measuring apparatus; a sensor array connected to the measuring apparatus having at least one sensor comprising a film comprising alternating electrically conductive and electrically non-conductive regions that reversibly interact with an analyte to be detected, wherein said conductive regions comprise a nanoparticle and said nonconductive regions comprise a nonconductive cap on the nanoparticle attached by an alkanethiol linkage, wherein the non-conductive cap is an insulating organic polymer, and a response path through the film of said nonconductive and said conductive regions. - 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)
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Specification