A low-cost ‘electronic nose’

UT Dallas researchers have designed an affordable “electronic nose” radio-frequency front end for a rotational spectrometer — used for detecting chemical molecules in human breath for health diagnosis. A breath test contains information about practically every part of a human body, but an electronic nose can detect gas molecules with more specificity and sensitivity than breathalyzers, which can confuse acetone for ethanol (the active ingredient of alcoholic drinks) in the breath, for example. This is important for patients with Type 1 diabetes, who have high concentrations of acetone in their breath.