Chemical Sensors: Gas Analyzer

One-dimensional system is a promising candidate as an extremely sensitive gas sensor because of its highly sensitive intrinsic properties to external perturbation.  The electronic structures of gases are unique properties of each gas and it can be utilized as a fingerprint of the target gas. By utilizing the extreme sensitivity of one-dimensional system and unique electronic structural properties of each gas, we are developing highly sensitive and selective gas sensors and it is called as a gas analyzer. To improve contact properties and the performance, carbon nanotubes are directly grown between two electrodes. This direct growth method is extended into large-scale integration of carbon nanotube gas analyzer.