METHOD OF ENHANCED DETECTION FOR NANOMATERIAL-BASED MOLECULAR SENSORS

摘要

Sensors based on single-walled carbon nanotubes and graphene which demonstrate extreme sensitivity as reflected in their electrical conductivity to gaseous molecules, such as NO, N02 and NH3, when exposed to in situ ultraviolet (UV) illumination during measurement of the analytes are disclosed. The sensors are capable of detection limits of NO down to almost 150 parts-per-quadrillion ("ppq"), detection limits of N02 to 2 parts- per-trillion ("ppt"), and detection limits of NH3 of 33 ppt.