Title data
de Lózar, Alberto ; Schöpf, Wolfgang ; Rehberg, Ingo ; Svensek, Daniel ; Kramer, Lorenz:
Transformation from walls to disclination lines : Statics and dynamics of the pincement transition.
In: Physical Review E.
Vol. 72
(November 2005)
Issue 5
.
- Art. Nr. 051713.
ISSN 1550-2376
DOI der Verlagsversion: https://doi.org/10.1103/PhysRevE.72.051713
Abstract
We present an experimental and theoretical study of the pincement phenomenon—transformation of a wall associated with the Fréedericksz transition into a pair of disclination lines. We measure the velocity of the boundary (front) between the two states as a function of the voltage. Experimental results are recovered by numerical simulations based on the nematic tensor order parameter, which also reveal the detailed three-dimensional structure of the front. By introducing reduced models we obtain approximate expressions for the two-state coexistence voltage and the front velocity. We find a bifurcation scenario incorporating a pair of saddle nodes at which the wall and disclination solutions appear or disappear.
Further data
Item Type: | Article in a journal |
---|---|
Keywords: | Experimental determinations of smectic, nematic, cholesteric, and other structures; Orientational order of liquid crystals, electric and magnetic field effects on order; Defects in liquid crystals; Continuum models and theories of liquid crystal structure |
DDC Subjects: | 500 Science > 530 Physics |
Institutions of the University: | Faculties > Faculty of Mathematics, Physics und Computer Science > Department of Physics > Former Professors > Chair Experimental Physics V - Univ.-Prof. Dr. Ingo Rehberg Profile Fields > Advanced Fields > Nonlinear Dynamics Faculties Faculties > Faculty of Mathematics, Physics und Computer Science Faculties > Faculty of Mathematics, Physics und Computer Science > Department of Physics Faculties > Faculty of Mathematics, Physics und Computer Science > Department of Physics > Chair Experimental Physics V Profile Fields Profile Fields > Advanced Fields Faculties > Faculty of Mathematics, Physics und Computer Science > Department of Physics > Former Professors |
Language: | English |
Originates at UBT: | Yes |
URN: | urn:nbn:de:bvb:703-epub-3988-9 |
Date Deposited: | 28 Jan 2019 13:59 |
Last Modified: | 06 Jul 2020 10:21 |
URI: | https://epub.uni-bayreuth.de/id/eprint/3988 |