Colloidal particles used in sensing arrays
AssigneeCalifornia Institute of Technology
InventorsNathan S. Lewis, Brett J. Doleman, Shawn Briglin, Erik J. Severin
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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.
Claims15
A device for detecting a chemical analyte, said device comprising:
- a sensor array connected to a measuring apparatus having at least one sensor comprising regions of nonconductive material and conductive material compositionally different than said nonconductive material, wherein said conductive material comprises a nanoparticle covalenty linked to said nonconductive material and said nonconductive material comprises a biomolecule, and
- a response path through said regions of nonconductive material and said conductive material.
Dependencies are inferred from the claim text.