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Method and apparatus for reducing sample dispersion in turns and junctions of microchannel systems

  • US 6,270,641 B1
  • Filed: 04/26/1999
  • Issued: 08/07/2001
  • Est. Priority Date: 04/26/1999
  • Status: Expired due to Fees
First Claim
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1. A low-dispersion device for turning the direction of transport of a moving sample that comprises:

  • a microchannel system comprising at least one turning channel having an inlet end and an outlet end, an inner wall and an outer wall, and an included turn angle, wherein the turning channel comprises contraction and expansion regions such that a portion of the turning channel is constricted to a width that is smaller than the widths of the inlet and outlet ends and wherein the turning channel has a cross-section that is rectangular, trapezoidal, or triangular.

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