"The whole aim of practical politics is to keep the populace alarmed (and hence clamorous to be led to safety) by menacing it with an endless series of hobgoblins, all of them imaginary." ~ H.L. Mencken
Electronic Nose Spots Anthrax Bacteria by Smell Alone
Submitted by Christopher Lempa on Thu, 2009-01-22 17:00
?In the last ten years or so electronic noses have become commercially available, based on a detection device known as a Taguchi sensor. These are heated semiconductor oxide films that change their resistance when they absorb gases. The gases break down inside the film and the various molecular species gather at grain boundaries within the film changing its resistance.?
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