Next Article in Journal
Extended Noble–Abel Stiffened-Gas Equation of State for Sub-and-Supercritical Liquid-Gas Systems Far from the Critical Point
Previous Article in Journal
Evolution of the Size Distribution of an Emulsion under a Simple Shear Flow
Previous Article in Special Issue
Exploring “Dormant” Opto-Mechanical Properties of the Isotropic Phase of Liquid Crystals and Revealing Hidden Elasticity of (Ordinary) Liquids
Article Menu

Export Article

Open AccessArticle
Fluids 2018, 3(3), 47;

Rheology of an Inverted Cholesteric Droplet under Shear Flow

Department of Chemical Engineering, Kyoto University, Kyoto 615-8510, Japan
Department of Physics and Sezione INFN Bari, 70126 Bari, Italy
Istituto Applicazioni Calcolo, CNR, 70126 Bari, Italy
Departmento of Physics and Astronomy and Sezione INFN, Università di Padova, 35131 Padova, Italy
Center for Life Nano Science, IIT, 00161 Roma, Italy
Author to whom correspondence should be addressed.
Received: 20 May 2018 / Revised: 26 June 2018 / Accepted: 28 June 2018 / Published: 3 July 2018
(This article belongs to the Special Issue Liquid Crystal Rheology)
Full-Text   |   PDF [9657 KB, uploaded 3 July 2018]   |  


The dynamics of a quasi two-dimensional isotropic droplet in a cholesteric liquid crystal medium under symmetric shear flow is studied by lattice Boltzmann simulations. We consider a geometry in which the flow direction is along the axis of the cholesteric, as this setup exhibits a significant viscoelastic response to external stress. We find that the dynamics depends on the magnitude of the shear rate, the anchoring strength of the liquid crystal at the droplet interface and the chirality. While low shear rate and weak interface anchoring the system shows a non-Newtonian behavior, a Newtonian-like response is observed at high shear rate and strong interface anchoring. This is investigated both by estimating the secondary flow profile, namely a flow emerging along the out-of-plane direction (absent in fully-Newtonian fluids, such as water) and by monitoring defect formation and dynamics, which significantly alter the rheological response of the system. View Full-Text
Keywords: cholesteric liquid crystals; shear dynamics; emulsions cholesteric liquid crystals; shear dynamics; emulsions

Figure 1

This is an open access article distributed under the Creative Commons Attribution License which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited (CC BY 4.0).

Share & Cite This Article

MDPI and ACS Style

Fadda, F.; Gonnella, G.; Lamura, A.; Orlandini, E.; Tiribocchi, A. Rheology of an Inverted Cholesteric Droplet under Shear Flow. Fluids 2018, 3, 47.

Show more citation formats Show less citations formats

Note that from the first issue of 2016, MDPI journals use article numbers instead of page numbers. See further details here.

Article Metrics

Article Access Statistics



[Return to top]
Fluids EISSN 2311-5521 Published by MDPI AG, Basel, Switzerland RSS E-Mail Table of Contents Alert
Back to Top