Dielectric and electro-optical properties of zinc ferrite nanoparticles dispersed nematic liquid crystal 4’-Heptyl-4-biphenylcarbonnitrile

Fréedericksz Transitions in 6CB Based Ferronematics—Effect of Magnetic Nanoparticles Size and Concentration

“…Such composite materials based on a nematic liquid crystal matrix with nanoscale magnetic admixture are known as ferronematics. Even a small amount of nanoparticles significantly influence magnetic [ 2 , 3 , 4 ], magneto-optical [ 5 ], morphological [ 6 ], dielectric [ 7 , 8 , 9 ], or electro-optical [ 8 , 9 ] properties. Dispersed nanoparticles enhance local short-range orientational order, order parameter, isotropic-nematic phase transition temperature, splay elastic constant [ 6 ], dielectric anisotropy [ 6 , 10 , 11 ], and dielectric permittivity [ 10 , 12 ], and decrease diffusion coefficient [ 11 ] and birefringence [ 13 ].…”

On the Analogy between Electrolytes and Ion-Generating Nanomaterials in Liquid Crystals

“…Recently, liquid crystals doped with nano-objects have emerged as novel tunable materials with advanced functionalities [41][42][43][44][45][46][47]. Electrical properties of liquid crystals doped with ferroelectric [48][49][50][51][52][53][54], magnetic [55][56][57], metal [58][59][60][61][62][63], semiconductor and dielectric [64][65][66][67][68][69], and carbon-based (fullerenes, carbon nanotubes, graphene, diamond) nanomaterials [70][71][72][73][74][75] were studied by many research teams (see also recent reviews [76,77] and references therein). The ion capturing effect is naturally expected for nanomaterials dispersed in liquid crystals.…”