This development paves the way for compact instruments that can measure specific gas components with speed and sensitivity, for detecting atmospheric pollution or testing for organically derived gases in a person’s breath. #Fujitsu’s graphene gas sensor replaces the gate part of a silicon transistor with graphene. This sensor can detect concentrations lower than tens of parts per billion (ppb) of nitrogen dioxide (NO2) and ammonia (NH3); with nitrogen dioxide in particular, sensitivity has improved more than tenfold, to less than 1 ppb. This technology is expected to enable real-time measurements of air quality, which may have taken tens of hours depending upon the gas being measured. It will also simplify detection of gas components in breath, which can be used to quickly discover lifestyle diseases.
http://www.electronicsweekly.com/news/business/490485-2016-12/
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