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SURFACE ACOUSTIC WAVE-BASED SENSING AND ACTUATION OF CONTAMINATION

  • US 20190325904A1
  • Filed: 03/29/2019
  • Published: 10/24/2019
  • Est. Priority Date: 04/18/2018
  • Status: Active Grant
First Claim
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1. A method, comprising:

  • 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;

    receiving the first SAW at a second IDT on the magnetic head slider;

    analyzing the SAW for a second set of wave characteristics; and

    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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