Method and system for detecting an airborne trigger
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United States of America Patent
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Jul 22, 2014
Grant Date -
May 30, 2013
app pub date -
Nov 30, 2011
filing date -
Nov 30, 2011
priority date (Note) -
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status (Latency Note)
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Abstract
An apparatus includes a cantilevered element including a coating material having an affinity for at least one compound. The apparatus further includes a first capacitive plate and a second capacitive plate that are each spaced from and capacitively coupled to the cantilevered element. The first capacitive plate is configured to induce a vibration in the cantilevered element at a frequency related to a mass of the cantilevered element. A frequency detector is coupled to the second capacitive plate to detect a change in vibrational frequency of the cantilevered element as a result of at least one particle of the at least one compound coupling to the coating material.
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