Rheology of cholesteric blue phases
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 appa...
| Asıl Yazarlar: | , , , |
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| Materyal Türü: | Journal article |
| Dil: | English |
| Baskı/Yayın Bilgisi: |
American Physical Society
2005
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| Konular: |
| _version_ | 1826300727975215104 |
|---|---|
| author | Dupuis, A Marenduzzo, D Orlandini, E Yeomans, J |
| author_facet | Dupuis, A Marenduzzo, D Orlandini, E Yeomans, J |
| author_sort | Dupuis, A |
| collection | OXFORD |
| description | 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 motion. Disclinations break up and re-form with their neighbors along the flow. |
| first_indexed | 2024-03-07T05:21:34Z |
| format | Journal article |
| id | oxford-uuid:df1b1030-d9bc-40c1-82d2-dc490e37f557 |
| institution | University of Oxford |
| language | English |
| last_indexed | 2024-03-07T05:21:34Z |
| publishDate | 2005 |
| publisher | American Physical Society |
| record_format | dspace |
| spelling | oxford-uuid:df1b1030-d9bc-40c1-82d2-dc490e37f5572022-03-27T09:36:55ZRheology of cholesteric blue phasesJournal articlehttp://purl.org/coar/resource_type/c_dcae04bcuuid:df1b1030-d9bc-40c1-82d2-dc490e37f557PhysicsTheoretical physicsEnglishOxford University Research Archive - ValetAmerican Physical Society2005Dupuis, AMarenduzzo, DOrlandini, EYeomans, JCholesteric 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 motion. Disclinations break up and re-form with their neighbors along the flow. |
| spellingShingle | Physics Theoretical physics Dupuis, A Marenduzzo, D Orlandini, E Yeomans, J Rheology of cholesteric blue phases |
| title | Rheology of cholesteric blue phases |
| title_full | Rheology of cholesteric blue phases |
| title_fullStr | Rheology of cholesteric blue phases |
| title_full_unstemmed | Rheology of cholesteric blue phases |
| title_short | Rheology of cholesteric blue phases |
| title_sort | rheology of cholesteric blue phases |
| topic | Physics Theoretical physics |
| work_keys_str_mv | AT dupuisa rheologyofcholestericbluephases AT marenduzzod rheologyofcholestericbluephases AT orlandinie rheologyofcholestericbluephases AT yeomansj rheologyofcholestericbluephases |