Hydrodynamic Flows in Microsized Liquid Crystal Cells with Orientational Defects

Journal Article · Sat Sep 15 04:00:00 EDT 2018 · Physics of the Solid State

DOI:https://doi.org/10.1134/S1063783418090366· OSTI ID:22771011

The effect of the orientational defect (OD) on the formation process of a vortical flow v(t, r), emerging in a microsized liquid crystal (LC) cell under the action of a focused laser radiation, was studied within the nonlinear generalization of the classical Ericksen–Leslie theory by numerical methods, considering the thermomechanical contributions to both the stress tensor and viscous torque, that acts on the unit volume of the liquid crystal phase (LC phase). The analysis of the obtained results showed that the vortical flow, rotating clockwise, is generated in a “defect” LC cell close to the OD, with the OD, placed on the lower bounding surface, on which the laser radiation was focused. The rotational velocity of this flow is two orders of magnitude greater than the rotational velocity of the vortex, which is generated in a “pure” LC cell at the same conditions and rotates anticlockwise.

• OSTI ID: 22771011
• Journal Information: Physics of the Solid State, Journal Name: Physics of the Solid State Journal Issue: 9 Vol. 60; ISSN 1063-7834
• Country of Publication: United States
• Language: English

Related Subjects

75 CONDENSED MATTER PHYSICS
SUPERCONDUCTIVITY AND SUPERFLUIDITY
COMPUTERIZED SIMULATION
DEFECTS
HYDRODYNAMICS
LASER RADIATION
LIQUID CRYSTALS
NONLINEAR PROBLEMS
STRESSES
SURFACES
VELOCITY
VORTICES