Figure 28.

Effects of trapping in the channel on transport efficiency and transmitted flux. Top: transport efficiency, defined as the ratio of the transmitted flux to the incoming flux as a function of the interaction strength in the channel The exit rate $\frac{r_o}{r}\simeq exp\left(-\frac{E}{k_{B}T}\right)$ where E is the potential well depth; r is the hopping rate within the channel.. Bottom: Transmitted flux as a function of the incoming flux. Solid line: particles with strong attraction to the channel. Dashed line: neutral particles that do not interact attractively with the channel. Reproduced from [312], permission pending.