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Phononic crystal devices

  • US 8,094,023 B1
  • Filed: 02/27/2009
  • Issued: 01/10/2012
  • Est. Priority Date: 03/10/2008
  • Status: Active Grant
First Claim
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1. A radiofrequency identification tag device, comprising:

  • a phononic crystal that suppresses thermally generated phonons in one or more frequency bands, anda piezoelectric crystal acoustically coupled to the phononic crystal that generates a voltage signal at one or more frequencies where the thermal phonons are not suppressed by the phononic crystal.

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