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Issue 19, 2009
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Rheological properties of bent-core liquid crystals

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We show that bent-core liquid crystalline materials exhibit non-Newtonian flow in their optically isotropic liquid phase. We conjecture that this behavior is due to the existence of nanostructured, fluctuating clusters composed of a few smectic-like layers. Shear alignment of these clusters explains the shear thinning observed in bent-core liquid crystals having either a nematic phase or non-modulated smectic phase. By contrast, smectogens having a modulated smectic phase do not shear thin at low shear rates, but even show a slight shear thickening which may be due to entanglements of wormlike and/or helical clusters.

Graphical abstract: Rheological properties of bent-core liquid crystals

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Article information

14 Apr 2009
23 Jun 2009
First published
24 Jul 2009

Soft Matter, 2009,5, 3618-3622
Article type

Rheological properties of bent-core liquid crystals

C. Bailey, K. Fodor-Csorba, J. T. Gleeson, S. N. Sprunt and A. Jákli, Soft Matter, 2009, 5, 3618
DOI: 10.1039/B907261F

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