Scientists, including those of
Indian origin, have developed a novel sensor – inspired by hairy, flying
insects – that can quickly detect a broad range of dangerous airborne
chemicals. Most insects have tiny hairs on their body surfaces, but it is not
clear what the hairs are for. Trying to make sense of what these hairs are
capable of, researchers designed experiments involving a “forest” of tiny hairs
on a thin vibrating crystal chip. When using resonators as sensors, most people
want to get rid of dissipation or friction because it is considered highly
undesirable, it tends to obscure what you are trying to measure. They have taken
that undesirable thing and made it useful.
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