Singular lines and singular points of ferromagnetic spin systems and of nematic liquid crystals

acterizing the elastic forces which return the NBel line to the original position as a result of its displacement, Fig.. sipation, only by an additional factor in the

From a phenomenological point of view, the anchoring energy is defined as a function of the director orientation close to the surfaces its minimum coincides with the mean

Presumably the acoustical attenuation arises from coupling of sound waves with both fluctuations of the director and magnitude of the order parameter. Unfortunately it is

This is mainly for two reasons : First, this kind of viscosity is an original property of nematic liquid crystals not linked to any macro-.. scopic shear and,

For a flow-aligning nematic, the HI shear rate threshold is studied as a function of surface tension anisotropy 03C3a and applied magnetic field strength.. It is shown

compounds : open circles, electrical measurements; filled circles, magnetic measurements. measurements of density or susceptibility have so far extended; we used

of fluctuation effects close to the transition point. This suggested examination of the effect of fluctuations close to the instability threshold [11,12]. The main step

2014 A theoretical analysis of the order parameter and temperature dependence of the complete set of five independent viscosities of incompressible nematic