Effective Collection and Detection of Airborne Species Using SERS-Based Detection and Localized Electrodynamic Precipitation

摘要

Detection of airborne species has attracted much attention due to the applications and potential for explosives detection and environmental monitoring. The detection of chemical agents commonly requires sensing schemes where the analytes are absorbed on a surface. The process of transport, absorption and precipitation is therefore critical to the detection limit of the analytes. This is true for all established gas phase sensing concepts, including gas chromatography, ion mobility spec-trometry (IMS), mass spectrometry, metal-semiconductor-metal-based sensors, chemical field-effect transistors, nanocantilever, infrared detection, and surface-enhanced Raman spectroscopy (SERS).