  It is now well established that microswimmers can be sorted or segregated
fabricating suitable microfluidic devices or using external fields. A natural
question is how these techniques can be employed for dividing swimmers of
different motility. In this paper, using numerical simulations in the dilute
limit, we investigate how motility parameters (time of persistence and
velocity) impacts the narrow-escape time of active particles from circular
domains. We show that the escape time undergoes a crossover between two
asymptotic regimes. The control parameters of the crossover is the ratio
between persistence length of the active motion and the typical length scale of
the circular domain. We explore the possibility of taking advantage of this
finding for sorting active particles by motility parameters.
