The Freedericksz transition in the magnetic field with pretilt angle is theoretically
investigated. Assuming the amplitude of director distortion ε m is small, three characteristic …

At the Freedericks transition of a nematic slab the molecules can rotate in two different ways,
giving rise to adjacent domains separated by a wall. We present optical observations on the …

A Landau-type free energy function is presented to describe the phase transitions from an
isotropic (superparamagnetic) ferrofluid to a ferromagnetic nematic liquid crystal either …

The untwisting of the helical structure of a cholesteric liquid crystal under the action of a
magnetic field and a shear flow has been studied theoretically. Both factors can induce the …

At the Freedericks transition of a nematic slab, the molecules can rotate by two different
ways, giving rise to adjacent domains separated by a wall. We present observations on the …

One of the most fascinating aspects of liquid crystals is the Fredericks transition, which can
occur when a finite sample of nematic liquid crystal is subjected to an externally applied …

A planar nematic layer will show a Freedericksz transition in a magnetic field perpendicular
to the unperturbed alignment. This transition occurs at H= Hc1 (splay) in a perpendicular …

This paper discusses two problems in which surface alignment, shear flow and a magnetic
field normal to the plane of shear compete to produce instabilities in a nematic. The first is …

A long time ago, Brochard and de Gennes predicted the possibility of significantly
decreasing the critical magnetic field of the Fredericksz transition (the magnetic Fredericksz …

We present the derivation of the macroscopic equations for uniaxial ferronematic gels and
elastomers. We deal with the superparamagnetic case, where no permanent magnetization …