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6 papers · 2 filters
Dispersions of ellipsoidal particles in a nematic liquid crystal
Mykola Tasinkevych, Frederic Mondiot, Olivier Mondain-Monval +1
Colloidal particles dispersed in a partially ordered medium, such as a liquid crystal (LC) phase, disturb its alignment and are subject to elastic forces. These forces are long-ran…
Sedimentation of granular columns in the viscous and weakly inertial regimes
Hamza Chraibi, Yacine Amarouchene
We investigate the dynamics of granular columns of point particles that interact via long-range hydrodynamic interactions and fall under the action of gravity. We investigate the i…
Light-induced pitch transitions in photosensitive cholesteric liquid crystals: Effects of anchoring energy
Tetiana N. Orlova, Roman I. Iegorov, Alexei D. Kiselev
We experimentally study how the cholesteric pitch, , depends on the equilibrium one, , in planar liquid crystal (LC) cells with both strong and semistrong anchoring conditi…
Excitation of fountain and entrainment instabilities at the interface between two viscous fluids using a beam of laser light
Hamza Chraibi, Julien Petit, Régis Wunenburger +1
We report on two instabilities called viscous fountain and viscous entrainment triggered at the interface between two liquids by the action of bulk flows driven by a laser beam. Th…
Dynamics in the smectic phase of stiff viral rods
Emilie Pouget, Eric Grelet, M. Paul Lettinga
We report on the dynamics in colloidal suspensions of stiff viral rods, called fd-Y21M. This mutant filamentous virus exhibits a persistence length 3.5 times larger than the wild-t…
Orientational order of carbon nanotube guests in a nematic host suspension of colloidal viral rods
Nicolas Puech, Matthew Dennison, Christophe Blanc +5
In order to investigate the coupling between the degrees of alignment of elongated particles in binary nematic dispersions, surfactant stabilized single-wall carbon nanotubes (CNTs…