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Cross sections of the vertical focused stream in channel E, downstream the intersection with channel D for Qa=Qc=7 μl∕min, Qb=1 μl∕min, and Qd=2 μl∕min: (a) CFD simulation and (b) confocal image. A small horizontal focusing effect is applied. The size of the focused sample is 68 μm in height and 300 μm in width.
