| abstract |
An electronic system and method for detecting carbon dioxide is provided, using a nanostructure sensing device (CO 2 sensor). The CO 2 sensor is made up of a substrate and a nanostructure disposed over the substrate. The nanostructure may comprise a carbon nanotube, or a network of nanotubes. Two conductive elements are disposed over the substrate and electrically connected to the nanotube. A gate electrode may be positioned opposite the nanostructure. A functionalization material reactive with carbon dioxide is disposed on CO 2 sensor, and in particular, on the nanotube. The CO 2 sensor may be connected to an electrical circuit, which will respond to changes in CO 2 concentration in the ambient sensor environment. |