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Prevention of surface adsorption in microchannels by application of electric current during pressure-induced flow

  • US 7,150,814 B1
  • Filed: 08/08/2002
  • Issued: 12/19/2006
  • Est. Priority Date: 05/11/1999
  • Status: Expired due to Term
First Claim
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1. A device or system comprising:

  • a body having a plurality of fluidly coupled microchannels disposed therein;

    a source of fluidic material fluidly coupled to at least one of the plurality of microchannels;

    a fluid pressure controller fluidly coupled to the at least one microchannel;

    at least two electrodes in fluidic or ionic contact with the at least one microchannel; and

    an electrical controller in electrical contact with the at least two electrodes, the electrical controller configured to apply an electric field that produces movement of at least a portion of the fluidic material adjacent to a surface of the at least one microchannel while minimally influencing movement of the fluidic material in a direction of fluid flow or while minimally influencing movement of charged fluidic material in a direction of flow of the charged material.

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