Detector for detecting molecules conveyed through a gaseous medium

摘要

The present invention provides a detector for detecting molecules conveyed through a gaseous medium. For example, the molecules may be emitted from sewage, meat production plants, or detection of the molecules may give information about a state of health of a human or an animal. The detector comprises sensors which have sensing surfaces. Each sensing surface has an electrical property that changes in response to the molecules when the molecules are coupled to the sensing surface so that the coupled molecules can be sensed by detecting the changed electrical property. The sensors are sensitive for a sulphur compound and for an organic compound. The present invention also provides a method of fabricating a detector for detecting molecules conveyed through the gaseous medium.