Weakly polar liquid crystal dispersed with hydrophobic and hydrophilic aerosils: a broadband dielectric study

Dielectric relaxation in bulk and cylindrically confined octylcyanobiphenyl (8CB)

“…However, some basic problems concerning the interpretation of the experimental results are still the source of controversy [2]. Recently, much attention has been paid to the effect of confinement of liquid crystals in porous matrices, with calorimetric and dielectric techniques very useful to analyse the changes in dynamic and static properties [3][4][5][6][7][8][9][10]. In this work we report a study on 8CB confined in untreated and treated cylindrical pores of Anopore membranes.…”

Effects of size, capping agent, and concentration of CdSe and CdTequantum dots doped into a nematic liquid crystal on the optical and electro-optic properties of the final colloidal liquid crystal mixture

“…Early studies focused on defect formation induced by particles not necessarily at the nanoscale, such as aerosils. [5][6][7][8][9][10][11][12][13][14][15][16][17][18][19][20] Commonly, these particles produced a large number of defects resulting in intense light scattering of the mixture in the field-OFF state, and becoming transparent when driven with an electric field. [21][22][23] More recent work has focused on the incorporation of nanomaterials, as increasingly more novel nanomaterials varying in shape, size, and composition became available.…”

Molecular dynamics in weakly polar nematic liquid crystal doped with dye

“…The earlier results suggest that dipole moment of the D6AOB molecule lies at an angle of around 64°to its long molecular axis [18,19], which according to the Maier-Maier theory [20] leads to negative dielectric anisotropy. However, the contribution of electronic polarizability to ɛ′ is greater in the direction along the long molecular axis than perpendicular to it.…”