Figure 3.

Dynamics of the IEF simulation with respect to channel size. The results of simulations (solid circles) were fitted to two-parameter power law equations of the form y=aw^b (solid lines). The time to reach steady state, a) is nearly linear (w^0.908) with respect to the channel width. The resolution b) at steady state, as defined by Equation (1), increased with nearly the square-root of the channel width (w^0.488). These findings are consistent with analytical expressions for IEF. A simulation of focusing for 5 sec at 1 mm followed by focusing at 3 mm (open circles) shows that high resolution can be reached in much less time.