Tuesday, November 08, 2011

US Patent 8052855 - CNT gas sensor


This patent from Samsung teaches a carbon nanotube gas sensor having improved sensitivity for sensing stable gases such as carbon dioxide and improving the adhesion between carbon nanotubes and electrodes. Claim 1 reads:

1. A carbon nanotube gas sensor comprising:

a substrate;

an insulating layer formed on the substrate;

electrodes formed on a same plane of the insulating layer; and

carbon nanotube barriers, which protrude higher than the electrodes, and are disposed in spaces between the electrodes; and

gas detecting spaces formed on the electrodes between the carbon nanotube barriers;

wherein ends of the carbon nanotube barriers are exposed, and the carbon nanotube barriers each comprise a plurality of carbon nanotubes, a first organic polymer, and a different second organic polymer.