Direct evidence of the molecular switching in electrically commanded surfaces for liquid crystal displays
Journal article, 2005

This work, performed by means of time-resolved high-resolution birefringence measurements, establishes the switching mechanism of electrically commanded surfaces _ECS_ for liquid-crystal displays. A distinct polar electro-optic response, due to the field-induced in-plane switching of the molecules of the 200-nm ferroelectric liquid crystalline polysiloxane alignment layer representing ECS, was detected in a cell filled with isotropic liquid _hexadecane_. The similarity between this response and the one reported recently in cells containing the same ECS but with a nematic liquid-crystal bulk with negative dielectric anisotropy (Delta-epsilon < 0) and field-free planar alignment provides direct and unambiguous proof that the switching in these cells is indeed mediated by the ECS. © 2005 American Institute of Physics. _DOI: 10.1063/1.2009071_

polymer films


time resolved spectra

ferroelectric switching

liquid crystal polymers

molecular reorientation

ferroelectric liquid crystals

electro-optical effects

nematic liquid crystals


molecular orientation


Miha Škarabot

Igor Muševič

Bertil Helgee

Chalmers, Chemical and Biological Engineering, Polymer Technology

University of Gothenburg

Lachezar Komitov

University of Gothenburg

Journal of Applied Physics

0021-8979 (ISSN) 1089-7550 (eISSN)

Vol. 98 046109-

Subject Categories

Manufacturing, Surface and Joining Technology

Other Engineering and Technologies not elsewhere specified

Atom and Molecular Physics and Optics

Other Materials Engineering

Condensed Matter Physics

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