| Modeling flows of confined nematic liquid crystals. | |
| | |
MedLine Citation:
|
PMID: 21476772 Owner: NLM Status: Publisher |
Abstract/OtherAbstract:
|
The flow of nematic liquid crystals in tightly confined systems was simulated using a molecular theory and an unsymmetric radial basis function collocation approach. When a nematic liquid crystal is subjected to a cavity flow, we find that moderate flows facilitate the relaxation of the system to the stable defect configuration observed in the absence of flow. Under more extreme flow conditions, e.g., an Ericksen number Er=20, flows can alter the steady-state defect structure observed in the cavity. The proposed numerical method was also used to examine defect annihilation in a thin liquid crystal film. The flows that arise from shear stresses within the system result in a higher velocity for s = +1∕2 defect than for the defect of opposing charge. This higher velocity can be attributed to reactive stresses within the deformed liquid crystal, which result in a net flow that favors the motion of one defect. These two examples serve to illustrate the usefulness of radial basis functions methods in the context of liquid crystal dynamics both at and beyond equilibrium. |
| | |
Authors:
|
Juan P Hernández-Ortiz; Brian T Gettelfinger; Jose Moreno-Razo; Juan J de Pablo |
Publication Detail:
|
Type: JOURNAL ARTICLE |
Journal Detail:
|
Title: The Journal of chemical physics Volume: 134 ISSN: 1089-7690 ISO Abbreviation: - Publication Date: 2011 Apr |
Date Detail:
|
Created Date: 2011-4-11 Completed Date: - Revised Date: - |
Medline Journal Info:
|
Nlm Unique ID: 0375360 Medline TA: J Chem Phys Country: - |
Other Details:
|
Languages: ENG Pagination: 134905 Citation Subset: - |
Affiliation:
|
Departamento de Materiales, Universidad Nacional de Colombia, Sede Medellín, Kra 80 # 65-223, Bloque M3-050, Medellín, ColombiaDepartment of Chemical and Biological Engineering, University of Wisconsin-Madison, Madison, Wisconsin 53706-1691, USA. |
Export Citation:
|
APA/MLA Format Download EndNote Download BibTex |
| MeSH Terms | |
Descriptor/Qualifier:
|
|
From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine
Previous Document: A density functional study on dielectric properties of acrylic acid grafted polypropylene.
Next Document: Flow-induced translocation of polymers through a fluidic channel: A dissipative particle dynamics si...