title: Manipulating chiral microswimmers in a channel.
abstract: We numerically simulate the diffusion of overdampd pointlike Janus particles along narrow two-dimensional periodically corrugated channels with reflecting walls. The self-propulsion velocity of the particle is assumed to rotate subject to an intrinsic bias modeled by a torque. Breaking the mirror symmetry of the channel with respect to its axis suffices to generate a directed particle flow with orientation and magnitude which depend on the channel geometry and the particle swimming properties. This means that chiral microswimmers drift autonomously along a narrow channel under more general asymmetry conditions than previously reported, a property of potential impact on their fabrication and technological applications.
authors.affiliation: Center for Phononics and Thermal Energy Science, School of Physics Science and Engineering, Tongji University, Shanghai 200092, People's Republic of China.
authors.forename: Yunyun
authors.initials: Y
authors.lastname: Li
authors.affiliation: Department of Chemistry, Presidency University, Kolkata 700073, India.
authors.forename: Pulak K
authors.initials: PK
authors.lastname: Ghosh
authors.affiliation: Dipartimento di Fisica, Università di Camerino, I-62032 Camerino, Italy.
authors.forename: Fabio
authors.initials: F
authors.lastname: Marchesoni
authors.affiliation: Center for Phononics and Thermal Energy Science, School of Physics Science and Engineering, Tongji University, Shanghai 200092, People's Republic of China and Department of Physics and Center for Computational Science and Engineering, National University of Singapore, Singapore 117456, Singapore.
authors.forename: Baowen
authors.initials: B
authors.lastname: Li