Magnetostrictive substance detection system and method
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United States of America Patent
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Nov 6, 2012
Grant Date -
Mar 11, 2010
app pub date -
Nov 16, 2007
filing date -
Dec 9, 2006
priority date (Note) -
Expired
status (Latency Note)
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Abstract
There is provided a method of detecting the presence of a substance comprising providing a cantilever (30) comprising a magnetostrictive material (34) and having an original resonant frequency. The method also comprises receiving the substance on the cantilever (30, 36) causing the resonant frequency of the cantilever (30) to change. The method also comprises applying a magnetic field to the cantilever (30) causing the resonant frequency to change to a reference resonant frequency and sensing when the resonant frequency becomes the reference resonant frequency.
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