Generalized nematohydrodynamic boundary conditions with application to bistable twisted nematic liquid-crystal displays

Handle URI:
http://hdl.handle.net/10754/598403
Title:
Generalized nematohydrodynamic boundary conditions with application to bistable twisted nematic liquid-crystal displays
Authors:
Fang, Angbo; Qian, Tiezheng; Sheng, Ping
Abstract:
Parallel to the highly successful Ericksen-Leslie hydrodynamic theory for the bulk behavior of nematic liquid crystals (NLCs), we derive a set of coupled hydrodynamic boundary conditions to describe the NLC dynamics near NLC-solid interfaces. In our boundary conditions, translational flux (flow slippage) and rotational flux (surface director relaxation) are coupled according to the Onsager variational principle of least energy dissipation. The application of our boundary conditions to the truly bistable π -twist NLC cell reveals a complete picture of the dynamic switching processes. It is found that the thus far overlooked translation-rotation dissipative coupling at solid surfaces can accelerate surface director relaxation and enhance the flow rate. This can be utilized to improve the performance of electro-optical nematic devices by lowering the required switching voltages and reducing the switching times. © 2008 The American Physical Society.
Citation:
Fang A, Qian T, Sheng P (2008) Generalized nematohydrodynamic boundary conditions with application to bistable twisted nematic liquid-crystal displays. Phys Rev E 78. Available: http://dx.doi.org/10.1103/PhysRevE.78.061703.
Publisher:
American Physical Society (APS)
Journal:
Physical Review E
Issue Date:
8-Dec-2008
DOI:
10.1103/PhysRevE.78.061703
PubMed ID:
19256854
Type:
Article
ISSN:
1539-3755; 1550-2376
Sponsors:
This work was supported by Hong Kong RGC Grant No. CA05/06.SC01. A. F. acknowledges support from the KAUST Global Research Partnership. T. Q. was also supported by Hong Kong RGC Grant No. 602007.
Appears in Collections:
Publications Acknowledging KAUST Support

Full metadata record

DC FieldValue Language
dc.contributor.authorFang, Angboen
dc.contributor.authorQian, Tiezhengen
dc.contributor.authorSheng, Pingen
dc.date.accessioned2016-02-25T13:20:07Zen
dc.date.available2016-02-25T13:20:07Zen
dc.date.issued2008-12-08en
dc.identifier.citationFang A, Qian T, Sheng P (2008) Generalized nematohydrodynamic boundary conditions with application to bistable twisted nematic liquid-crystal displays. Phys Rev E 78. Available: http://dx.doi.org/10.1103/PhysRevE.78.061703.en
dc.identifier.issn1539-3755en
dc.identifier.issn1550-2376en
dc.identifier.pmid19256854en
dc.identifier.doi10.1103/PhysRevE.78.061703en
dc.identifier.urihttp://hdl.handle.net/10754/598403en
dc.description.abstractParallel to the highly successful Ericksen-Leslie hydrodynamic theory for the bulk behavior of nematic liquid crystals (NLCs), we derive a set of coupled hydrodynamic boundary conditions to describe the NLC dynamics near NLC-solid interfaces. In our boundary conditions, translational flux (flow slippage) and rotational flux (surface director relaxation) are coupled according to the Onsager variational principle of least energy dissipation. The application of our boundary conditions to the truly bistable π -twist NLC cell reveals a complete picture of the dynamic switching processes. It is found that the thus far overlooked translation-rotation dissipative coupling at solid surfaces can accelerate surface director relaxation and enhance the flow rate. This can be utilized to improve the performance of electro-optical nematic devices by lowering the required switching voltages and reducing the switching times. © 2008 The American Physical Society.en
dc.description.sponsorshipThis work was supported by Hong Kong RGC Grant No. CA05/06.SC01. A. F. acknowledges support from the KAUST Global Research Partnership. T. Q. was also supported by Hong Kong RGC Grant No. 602007.en
dc.publisherAmerican Physical Society (APS)en
dc.titleGeneralized nematohydrodynamic boundary conditions with application to bistable twisted nematic liquid-crystal displaysen
dc.typeArticleen
dc.identifier.journalPhysical Review Een
dc.contributor.institutionHong Kong University of Science and Technology, William Mong Institute of Nano Science & Technology, Hong Kong, Chinaen
dc.contributor.institutionHong Kong University of Science and Technology, Hong Kong, Chinaen

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