@article{ISI:000461911800004,
 abstract = {We present an experimental realization of the collective trapping phase
transition [Kaiser et al., Phys. Rev. Lett. 108, 268307 (2012)], using
motile polar granular rods in the presence of a V-shaped obstacle. We
offer a theory of this transition based on the interplay of
motility-induced condensation and liquid-crystalline ordering and show
that trapping occurs when persistent influx overcomes the collective
expulsion of smectic defect structures. In agreement with the theory,
our experiments find that a trap fills to the brim when the trap angle
theta is below a threshold theta(c), while all particles escape for
theta > theta(c). Our simulations support a further prediction, that B e
goes down with increasing rotational noise. We exploit the sensitivity
of trapping to the persistence of directed motion to sort particles
based on the statistical properties of their activity.},
 article-number = {032605},
 author = {Kumar, Nitin and Gupta, Rahul Kumar and Soni, Harsh and Ramaswamy,
Sriram and Sood, A. K.},
 doi = {10.1103/PhysRevE.99.032605},
 eissn = {2470-0053},
 issn = {2470-0045},
 journal = {PHYSICAL REVIEW E},
 month = {MAR 15},
 number = {3},
 orcid-numbers = {Kumar, Nitin/0000-0003-2697-4842},
 researcherid-numbers = {Kumar, Nitin/AAS-3576-2020},
 times-cited = {6},
 title = {Trapping and sorting active particles: Motility-induced condensation and
smectic defects},
 unique-id = {ISI:000461911800004},
 volume = {99},
 year = {2019}
}