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Rapid flow fractionation of particles combining liquid and particulate dielectrophoresis

  • US 20060108224A1
  • Filed: 07/26/2005
  • Published: 05/25/2006
  • Est. Priority Date: 07/28/2004
  • Status: Active Grant
First Claim
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1. A method for selective separation of particles which are suspended in a liquid medium and which differ in regard to a characteristic, the method comprising:

  • (a) applying the liquid medium to a pair of electrodes;

    (b) applying a voltage to the pair of electrodes to generate a non-uniform electric field in the liquid medium, the voltage comprising an alternating-current voltage with a frequency sufficiently high for the electric field to penetrate through the liquid medium; and

    (c) performing step (b) for a sufficient time that the liquid sample travels along the electrodes, with the particles which differ in regard to the characteristic having different spatial distributions along the electrodes.

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