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Rheology of cholesteric blue phases

Abstract:

Cholesteric blue phases are a spectacular example of disclination line networks. Here we numerically investigate their response to an imposed Poiseuille flow. We show that shear forces bend and twist and can unzip the disclination lines. Under gentle forcing the network opposes the flow and the apparent viscosity is large. With increased forcing we find strong shear thinning corresponding to the disruption of the network. As the viscosity starts to drop, the imposed flow sets the network into...

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Publication status:
Published
Peer review status:
Peer reviewed
Version:
Publisher's version

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Publisher copy:
10.1103/PhysRevLett.95.097801

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Institution:
University of Oxford
Department:
Mathematical,Physical & Life Sciences Division - Physics - Theoretical Physics
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Institution:
University of Warwick
Department:
Mathematics Institute
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Institution:
Universita' di Padova, Italy
Department:
INFM-Dipartimento di Fisica and Sezione INFN
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Institution:
University of Oxford
Research group:
Oxford Condensed Matter Theory Group
Oxford college:
St Hilda's College
Department:
Mathematical,Physical & Life Sciences Division - Physics - Theoretical Physics
Publisher:
American Physical Society Publisher's website
Journal:
Physical Review Letters Journal website
Volume:
95
Issue:
9
Pages:
Article 097801
Publication date:
2005-08-05
DOI:
EISSN:
1079-7114
ISSN:
0031-9007
URN:
uuid:df1b1030-d9bc-40c1-82d2-dc490e37f557
Local pid:
ora:1716

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