Macroscopic dynamics of ferronematics

Abstract

Transient 1-2 plane small-angle x-ray scattering measurements of micellar orientation in aligning and tumbling nematic surfactant solutions Steady and transient rheological behavior of mesophase pitches J. Rheol. 42, 781 (1998); 10.1122/1.550912 X-ray scattering investigation of highly concentrated poly(benzyl glutamate) solutions under shear flow

Magnetic field-induced orientational phases of ferronematics in shear flow

“…The increasing of the velocity gradient x leads to the stabilization of the homeotropic phase, shifting the threshold in the region of the stronger magnetic fields then in the static case. It agrees with expression (22) for the threshold field h x? , obtained above in the limit of small velocity gradient.…”

“…For the strong coupling sb1 the threshold magnetic field (22) reduces to the expression h x? % 1 þ x ffiffiffiffiffiffiffiffiffiffiffiffiffi l 2 À 1 p , which depends on the velocity gradient x and reactive parameter l only.…”

“…However, rheological FN properties are extremely poorly investigated. The set of FN dynamic equations was proposed by Jarkova et al [22], but this description has too many phenomenological parameters. More simple and convenient method for analysis of FN dynamics was used by Raikher and Stepanov [23].…”

Optical response of magnetically aligned nematic soft matter by transverse nemato-magnetic waves

“…However, when magnetic grains are involved in motion the above analysis should be re-examined to account for the effect of fluctuating field of magnetization (caused by oscillations of magnetic grains), which must be introduced, as is argued in Ref. [9], as an independent variable of nematodynamics. As a summary, the presented analysis suggests that transmission of circularly polarized optical signal by a homogeneous magnetically aligned nematic device might be utilized for the information processing and storage.…”

Landau Theory of Phase Transition in Ferroelectric Vinylidene Fluoride/Trifluoroethylene Copolymer Single Crystals

“…The complete set of macroscopic dynamic equations for ferronematics includes the magnetization as an independent slowly relaxing variable [14]. Orientational changes of the magnetization are coupled to nematic director reorientations not only in the statics, but in the dynamics as well.…”