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. Author manuscript; available in PMC: 2009 Nov 1.
Published in final edited form as: Anal Chem. 2008 Oct 3;80(21):8231–8238. doi: 10.1021/ac801317t

Figure 2.

Figure 2

A) Illustrates the patterning of hydrophobic regions on a glass microfluidic channel using laminar flow. A vacuum was applied to the common waste reservoir on the manifold to flow octadecyltrichlorosilane (OTCS) solution through the segmented flow channel. Solvent was also simultaneously pumped through the electrophoresis channels to the K interface as shown in the inset. B) Micrograph showing the completed K fluid element and virtual wall formed by flowing perfluorodecalin through the large straight channel (right to left) and aqueous buffer through the V shaped channel (right to left).