Threshold deformations in sheared planar cholesteric layers

Grzegorz Derfel; Dariusz Krzyzański

doi:10.1117/12.299990

Threshold deformations in sheared planar cholesteric layers

Grzegorz Derfel, Dariusz Krzyzański

Research output: Contribution to journal › Conference article › peer-review

1 Scopus citations

Abstract

The shear flow induced deformation of the planar long pitch flow-aligning cholesteric was modelled numerically. Three pitch-to-thickness ratios, with the midplane director perpendicular to the plane of shear, were considered. Unwinding of the cholesteric helix due to the flow alignment was found. A threshold character of this process was revealed. At high stress, the director in the prevailing pan of the layer was oriented at the flow-aligning angle. The transverse component of the flow was always present.

Original language	English
Pages (from-to)	296-299
Number of pages	4
Journal	Proceedings of SPIE - The International Society for Optical Engineering
Volume	3318
DOIs	https://doi.org/10.1117/12.299990
State	Published - 1 Dec 1997
Externally published	Yes
Event	Liquid Crystals: Physics, Technology and Applications - Zakopane, Poland Duration: 3 Mar 1997 → 8 Mar 1997

Keywords

Cholesterics
Shear flow

ASJC Scopus subject areas

Electronic, Optical and Magnetic Materials
Condensed Matter Physics
Computer Science Applications
Applied Mathematics
Electrical and Electronic Engineering

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10.1117/12.299990

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abstract = "The shear flow induced deformation of the planar long pitch flow-aligning cholesteric was modelled numerically. Three pitch-to-thickness ratios, with the midplane director perpendicular to the plane of shear, were considered. Unwinding of the cholesteric helix due to the flow alignment was found. A threshold character of this process was revealed. At high stress, the director in the prevailing pan of the layer was oriented at the flow-aligning angle. The transverse component of the flow was always present.",

keywords = "Cholesterics, Shear flow",

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AU - Krzyzański, Dariusz

PY - 1997/12/1

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N2 - The shear flow induced deformation of the planar long pitch flow-aligning cholesteric was modelled numerically. Three pitch-to-thickness ratios, with the midplane director perpendicular to the plane of shear, were considered. Unwinding of the cholesteric helix due to the flow alignment was found. A threshold character of this process was revealed. At high stress, the director in the prevailing pan of the layer was oriented at the flow-aligning angle. The transverse component of the flow was always present.

AB - The shear flow induced deformation of the planar long pitch flow-aligning cholesteric was modelled numerically. Three pitch-to-thickness ratios, with the midplane director perpendicular to the plane of shear, were considered. Unwinding of the cholesteric helix due to the flow alignment was found. A threshold character of this process was revealed. At high stress, the director in the prevailing pan of the layer was oriented at the flow-aligning angle. The transverse component of the flow was always present.

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KW - Shear flow

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U2 - 10.1117/12.299990

DO - 10.1117/12.299990

M3 - Conference article

AN - SCOPUS:0031391909

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VL - 3318

SP - 296

EP - 299

JO - Proceedings of SPIE - The International Society for Optical Engineering

JF - Proceedings of SPIE - The International Society for Optical Engineering

T2 - Liquid Crystals: Physics, Technology and Applications

Y2 - 3 March 1997 through 8 March 1997

ER -

Threshold deformations in sheared planar cholesteric layers

Abstract

Keywords

ASJC Scopus subject areas

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