Frustrated ‘run and tumble’ of swimming Escherichia coli bacteria in nematic liquid crystals
Sign Up to like & getrecommendations! Published in 2022 at "Interface Focus"
DOI: 10.1098/rsfs.2022.0039
Abstract: In many situations, bacteria move in complex environments, as soils, oceans or the human gut-track, where carrier fluids show complex structures associated with non-Newtonian rheology. Many fundamental questions concerning the ability to navigate in such… read more here.
Keywords: coli; liquid crystals; run tumble; frustrated run ... See more keywords
Nematic director fields and topographies of solid shells of revolution
Sign Up to like & getrecommendations! Published in 2018 at "Proceedings of the Royal Society A: Mathematical, Physical and Engineering Sciences"
DOI: 10.1098/rspa.2017.0566
Abstract: We solve the forward and inverse problems associated with the transformation of flat sheets with circularly symmetric director fields to surfaces of revolution with non-trivial topography, including Gaussian curvature, without a stretch elastic cost. We… read more here.
Keywords: director; director field; fields topographies; revolution ... See more keywords
Lattice Boltzmann and Jones matrix calculations for the determination of the director field structure in self-propelling nematic droplets.
Sign Up to like & getrecommendations! Published in 2021 at "Physical Review E"
DOI: 10.1103/physreve.104.044703
Abstract: Nematic droplets immersed in aqueous surfactant solutions can show a self-propelled motion induced by a Marangoni flow in the droplet surface. In addition to the self-propulsion, the Marangoni flow induces within the droplet a convective… read more here.
Keywords: director; determination director; director field; self propelling ... See more keywords
Bistable director alignments of nematic liquid crystals confined in frustrated substrates.
Sign Up to like & getrecommendations! Published in 2017 at "Physical Review E"
DOI: 10.1103/physreve.95.012706
Abstract: We studied in-plane bistable alignments of nematic liquid crystals confined by two frustrated surfaces by means of Monte Carlo simulations of the Lebwohl-Lasher spin model. The surfaces are prepared with orientational checkerboard patterns, on which… read more here.
Keywords: director; director field; nematic liquid; crystals confined ... See more keywords
Motion of a colloidal particle in a nonuniform director field of a nematic liquid crystal.
Sign Up to like & getrecommendations! Published in 2017 at "Physical Review E"
DOI: 10.1103/physreve.95.012709
Abstract: We investigate the dynamics of a single spherical particle immersed in a nematic liquid crystal. A nonuniform director field is imposed on the substrate by a stripe alignment pattern with splay deformation. The particle of… read more here.
Keywords: motion; director field; nematic liquid; liquid crystal ... See more keywords