Effect of addition of weakly trapped species on the transport of the strongly trapped species.
Relative transport efficiency of the strongly trapped species (for and ) as a function of the trapping strength of the added weakly trapped species, when the latter are added in the same concentration (black) or in tenfold excess (gray) in the same kinetic profile as in Figs. 3, 4, and 5 (shown in Fig. 2). Addition of the weakly trapped species enhances the transport of the strongly trapped species – see text for discussion. Inset: density profile of the specific (red) and non-specific (blue) particles from the channel entrance to the exit for strong (left), intermediate (middle) and (weak) trapping of the non-specific particles present in ten-fold excess.