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Method and apparatus for measuring particle motion optically

  • US 20060152722A1
  • Filed: 02/17/2006
  • Published: 07/13/2006
  • Est. Priority Date: 07/31/2002
  • Status: Active Grant
First Claim
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1. An apparatus for measuring particle motion, the apparatus comprising:

  • a plurality of beams of radiation, each of said plurality of beams modulated at a respective, pre-determined frequency and a respective, pre-determined phase, said plurality of beams of radiation directed to at least one particle;

    a detector positioned to receive radiation scattered from each of said plurality of beams by said at least one particle;

    a processor in electrical communication with said detector, said processor cross-correlating radiation scattered from at least two of said plurality of beams by said at least one particle.

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