Patent ID: 8414831
Filing Date: 2013-04-09
Classification: G01N,Y10T

Abstract:
1. A chlorine gas sensor system comprising carbon nanotubes at least partially coated with a metal oxide material deposited on a substrate, the metal oxide material being capable of absorbing chlorine gas at room temperature conditions, and a source of infra-red light positioned to illuminate at least a portion of the coated nanotubes, the source of infra-red light having on/off states at Rmin/Rmax, respectively, with R being resistance change, that respond to a presence of chlorine passing through the sensor structure, the on state being configured to provide infra-red light to the metal oxide material coated nanotubes sufficient to allow the adsorbed chlorine gas to release from metal oxide material coated carbon nanotubes, wherein, when chlorine passes through the sensor structure, the resistance changes from R