Patent ID: 6176991
Filing Date: 2001-01-23
Classification: G01N,Y10S

Abstract:
An electrophoresis channel through which one or more analytes are intended to migrate under the influence of a voltage difference applied across opposite ends of the channel, comprising(i) a pair of channel segments disposed at an angle .alpha. with respect to one another, and(ii) an angled channel region connecting the two channel segments, said region having(a) a first curved channel portion subtending an angle .alpha..sub.f >.alpha., and defining first inner and outer tracks such that an analyte migrating through the first channel portion under the influence of such voltage difference will traverse the inner track in a time interval .delta.t.sub.f faster than that of the same analyte traversing the outer track, and(b) a second curved channel portion subtending an angle .alpha..sub.s =.alpha..sub.f -.alpha., and defining second inner and outer tracks such that an analyte migrating through the second channel portion under the influence of the same voltage difference will traverse the outer track in a time interval .delta.t.sub.s faster than that of the same analyte traversing the inner track,where the cross-sections of said curved channel portions are such that .delta.t.sub.f is approximately equal to .delta.t.sub.s.