Please use this identifier to cite or link to this item: http://hdl.handle.net/1783.1/6039

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

Authors Fang, Angbo
Qian, Tiezheng
Sheng, Ping
Issue Date 2008
Source PHYSICAL REVIEW E , v. 78, (6, Part 1), 2008, DEC, article number 061703
Summary 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 pi-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.
Subjects
ISSN 1539-3755
Rights Physical Review E © copyright 2008 American Physical Society. The journal's web site is located at http://pre.aps.org
Language English
Format Article
Access View full-text via DOI
View full-text via Web of Science
View full-text via Scopus
Find@HKUST
Files in this item:
File Description Size Format
gener.pdf 298401 B Adobe PDF