Patent Number: 7,955,561

Title: Colloidal particles used in sensing array

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.

Inventors: Lewis; Nathan S. (La Canada, CA), Doleman; Brett J. (San Francisco, CA), Briglin; Shawn M. (Pasadena, CA), Severin; Erik J. (San Marino, CA)

Assignee: The California Institute of Technology

International Classification: G01N 27/04 (20060101); G01N 27/06 (20060101)

Expiration Date: 2019-06-07 0:00:00