Patent ID: 8673216
Filing Date: 2014-03-18
Classification: B82Y,G01N

Abstract:
1. A device for detecting an electronegative analyte vapor, comprising: (a) a film comprising a nanostructured chemiresistive material having a first resistivity in the absence of an electronegative analyte vapor and a second resistivity, different than the first resistivity, after exposure to the electronegative analyte vapor, wherein the nanostructured chemiresistive material is a three-dimensional mesh that comprises a plurality of nanostructured materials selected from the group consisting of nanowires, nanotubes, nanoparticles, and mixtures thereof, and wherein the nanostructured chemiresistive material comprises monoclinic titanium dioxide; and (b) a resistivity-measuring device sized and configured to determine a resistivity of the film, wherein the resistivity measuring device comprises a first electrode and a second electrode on a surface of the film and spaced a distance apart from each other such that the first electrode is in resistive communication with the second electrode through a first sensing region of the film.