Surface acoustic wave-based sensing and actuation of contamination
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United States of America Patent
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Aug 10, 2021
Grant Date -
Jul 2, 2020
app pub date -
Mar 10, 2020
filing date -
Apr 18, 2018
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Abstract
A method includes producing a first surface acoustic wave (SAW) on a magnetic head slider using a first interdigitated transducer (IDT), wherein the SAW has a first set of wave characteristics. The method also includes receiving the first SAW at a second IDT on the magnetic head slider. The method also includes analyzing the SAW for a second set of wave characteristics. The method also includes determining, based on the analyzing, that a substance having at least one characteristic is located in a path of the SAW on the magnetic head slider.
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