In:
Japanese Journal of Applied Physics, IOP Publishing, Vol. 33, No. 11R ( 1994-11-01), p. 6249-
Abstract:
Continuum theory and numerical method are utilized in this study to report the dependence of director-field
transition induced by electric field on the elastic constants of nematic liquid crystal (NLC) with negative dielectric anisotropy in a closed conical cavity with perpendicular boundary conditions of NLC. Normal umbilic structure (NU),
twisted umbilic structure (TU), normal hyperbolic point structure with a disclination ring (NH), twisted hyperbolic point structure with a disclination ring (TH), and normal Poincare structure (NP) are found to be stable structures in
electric-field-induced transitions. Moreover, five typical sequences of transition, T N U → T U → T H , T N U → T U → N H → T H ,
T N U → T U → N H , T N U → N H , and T N U → N P → N H are found in the range of applied voltage less than 10 V. The transition sequences and the transition voltages are
strongly dependent on the ratios of elastic constants K 11 / K 33 and K 22 / K 33 .
Type of Medium:
Online Resource
ISSN:
0021-4922
,
1347-4065
DOI:
10.1143/JJAP.33.6249
Language:
Unknown
Publisher:
IOP Publishing
Publication Date:
1994
detail.hit.zdb_id:
218223-3
detail.hit.zdb_id:
797294-5
detail.hit.zdb_id:
2006801-3
detail.hit.zdb_id:
797295-7
