نتایج جستجو برای: dielectric liquid
تعداد نتایج: 254540 فیلتر نتایج به سال:
Dielectric dispersions on the Kerr constant of two polymer-stabilized blue phase liquid crystals (BPLCs) are investigated. An extended Cole-Cole model is proposed to fit the experimental results and good agreement is obtained. As the electric field frequency increases, Kerr constant decreases and the associated dielectric heating effect gradually increases. These results will undoubtedly affect...
A liquid containing quasi-rigid polar molecules which do not experience specific interactions (as, for example, aprot ic molecules) corresponds to the parent model for dielectric relaxation processes which is based on the assumpt ion of rotat ional tumbling of single polar entities. F r o m hydrodynamic considerat ions Debye [1] est imated the dielectric relaxation time z to be p ropor t iona l...
We report five ultra-low viscosity nematic liquid crystal mixtures with birefringence around 0.1, dielectric anisotropy in the range of 3 to 6, and clearing temperature about 80°C. A big advantage of these low viscosity mixtures is low activation energy, which significantly suppresses the rising rate of viscosity at low temperatures. Using our mixture M3 as an example, the response time of a 3-...
The dielectric anisotropy of liquid crystals causes director reorientation in an applied electric field and is thus at the heart of electro-optic applications of these materials. The components of the dielectric tensor are frequency dependent. Until recently, this frequency dependence was not accounted for in a description of director dynamics in an electric field. We theoretically derive the r...
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