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Acoustic wave based sensor

  • US 6,626,026 B2
  • Filed: 04/06/2001
  • Issued: 09/30/2003
  • Est. Priority Date: 04/07/2000
  • Status: Expired due to Fees
First Claim
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1. An apparatus for detecting the presence of a substance using acoustic waves, the apparatus comprising:

  • a first part that is configured to generate acoustic waves; and

    a second part comprising a sensing and acoustic wave guiding device configured to sense said substance and propagate said acoustic waves, and further configured to confine said acoustic waves to a surface of said sensing and acoustic wave guiding device, and wherein said first part is removably fixable to said second part so that when fixed said acoustic waves propagate in said second part.

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