Abstract
An electrically driven fluid pumping principle and a mechanism of kinklike distortion of the director field in the microsized nematic volume has been described. It is shown that the interactions, on the one hand, between the electric field and the gradient of the director's field , and, on the other hand, between the and the temperature gradient arising in a homogeneously aligned liquid crystal microfluidic channel, confined between two infinitely long horizontal coaxial cylinders, may excite the kinklike distortion wave spreading along normal to both cylindrical boundaries. Calculations show that the resemblance to the kinklike distortion wave depends on the value of radially applied electric field and the curvature of these boundaries. Calculations also show that there exists a range of parameter values (voltage and curvature of the inner cylinder) producing a nonstandard pumping regime with maximum flow near the hot cylinder in the horizontal direction.
4 More- Received 7 September 2020
- Revised 24 November 2020
- Accepted 1 January 2021
DOI:https://doi.org/10.1103/PhysRevE.103.012702
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