Chiral Nematic Liquid Crystals and Electric, Magnetic, and Mechanical Fields

Enhancing laser speckle reduction by decreasing the pitch of a chiral nematic liquid crystal diffuser

“…Therefore, one might expect that a mixture with a shorter pitch would exhibit more spatial variation of the birefringence across layer, which would lead to increased scattering. Also, mixtures with long pitches (> 4 μm) typically exhibit an electric field-induced fingerprint texture rather than the focal conic state 24 , 25 , which will result in less scattering. This is consistent with the limited speckle reduction achieved for the long pitch mixtures considered in this study.…”

Development and applications of cholesteric liquid crystals

“…Some of these dopants showed high HTP values. For example, derivatives of isosorbide (5) provide HTP values over 60µ -1 , have good solubility in liquid crystals (> 4%) and exhibit a small change of pitch length with temperature (dλ/dt~0.09 µm/°C). [42] It is however difficult to predict the HTP value and sense of helix in such systems as the Gray /McDonnell rules were developed for chiral groups in terminal substituents.…”

“…This is not intended to be a full review of cholesteric systems because, as with most subjects, many other researchers have also made significant contributions to the understanding and use of these systems. These contributions are covered in other publications covering optical, [4] electrical, magnetic and mechanical properties [5] and applications [6] of cholesteric systems.…”

Existence of global weak solutions to the compressible Ericksen–Leslie system in dimension one

“…In this paper, we will study the compressible Ericksen-Leslie system of liquid crystal flows (see [1,20] for modeling). Let Ω ⊂ R 3 be a bounded domain with smooth boundary, and S 2 be the unit sphere in R 3 .…”