Zobrazeno 1 - 10
of 50
pro vyhledávání: '"Jayantilal Shamjibhai Patel"'
Publikováno v:
Molecular Crystals and Liquid Crystals Science and Technology. Section A. Molecular Crystals and Liquid Crystals. 263:37-47
We report on the uniform alignment and continuous ferroelectric switching of a twisted smectic C* liquid crystals (LCs). In contrast to surface stabilized ferroelectric LCs, a twisted smectic C* (Sm C*) structure exhibits essentially no threshold fie
Publikováno v:
Molecular Crystals and Liquid Crystals Science and Technology. Section A. Molecular Crystals and Liquid Crystals. 247:293-302
We have observed a peculiar sign inversion of the field-induced molecular tilt with respect to the layer normal in the smectic A phase of some chiral compounds as temperature increases. At a characteristic temperature, the electroclinic response of t
Publikováno v:
Ferroelectrics. 148:357-368
We describe several important aspects of surface smectic ordering prior to the onset of bulk ordering in chiral smectic materials. Above a direct isotropic - smectic A (I-A) and nematic - smectic A (N-A) transition in the bulk, there exists an in-pla
Publikováno v:
Molecular Crystals and Liquid Crystals Science and Technology. Section A. Molecular Crystals and Liquid Crystals. 227:39-48
We have observed the deviation of the layer normal from an easy axis created by a unidirectional rubbing in the smectic A phase of a ferroelectric liquid crystal. The magnitude of the observed layer tilt is substantially larger than what has been pre
Publikováno v:
Liquid Crystals. 13:313-317
We report the first optical microscopic observation of characteristic textures and the associated layer ordering in a recently discovered, helical smectic A* phase on a multiple domain substrate. The experimental results are quite unusual but consist
Publikováno v:
Applied Physics Letters. 76:3995-3997
In this letter, we propose a simple configuration that is capable of rotating a linear polarization state of light by a certain angle for a wide range of wavelengths. The device consists of three liquid-crystal cells: two homogeneous cells and one tw
Publikováno v:
Applied Physics Letters. 76:3005-3007
In this letter, we investigate the behavior of the defects in a circular-circularly rubbed liquid crystal cell with an off-center alignment. We show that the line defect forms a circle that passes through the rubbing centers of the two surfaces. The
Publikováno v:
Applied Physics Letters. 76:2334-2336
The transformation of the state of polarization (SOP) of light from one state to another can be graphically illustrated by a trajectory on the Poincare sphere (PS). We use this method to illustrate the control of the azimuth SOP rotation on the PS. T
Publikováno v:
Molecular Crystals and Liquid Crystals. 209:79-84
The static and dynamic properties of the flexoelectric effect in cholesteric liquid crystals are presented. In a simple geometry, the application of an external electric field perpendicular to the cholesteric helix results in a linear electro-optic e
Publikováno v:
Modern Physics Letters B. :821-826
It is shown that for some chiral smectic A materials the field-induced molecular tilt undergoes a peculiar sign inversion with respect to the layer normal as the temperature increases. The induced molecular tilt vanishes at a characteristic temperatu