[PDF] Top 20 Kickback in nematic liquid crystals

... [3] S. L. Cornford, T. S. Taphouse, C. J. P. Newton, and J. R. Sambles, Determination of the director profile in a nematic cell from guided wave data: an inverse problem, New J. Phys. 9 (2007), 166–170. [4] F. P. ... See full document

... The parameter α appears in the continuum theory of switching phenomena, such as the homeotropic to planar-bend Freedericksz transition (see e.g. Chapter 5 of Ref. [3]). The influence of small values of α on backflow and ... See full document

... of nematic liquid crystal (LC) E7 on the surface of (111) silicon wafers and in the channels of grooved silicon structure has been ...E7 liquid crystal in grooved silicon exhibits a weak planar ... See full document

... the nematic and Sm phases of compounds 13 are given in Figure ...the nematic phase is split into four lobes of equal intensity; azimuthal averaging of each frame in the range 2 θ = ...the nematic ... See full document

... 11 Two orthogonal smectic phases and an adjacent nematic phase This chapter describes the study of a 4-cyanoresorcinol based bent-core liquid cnjstal which exhibit an interesting phase s[r] ... See full document

... GRIN liquid crystal devices can employ the change in refractive index of the DC phase to form optical devices similar to those that make use of nematic liquid crystals but with the significant ... See full document

... the liquid crystals (LC) is very complex and their aligned surface is included the important fac- tors such as van der Waals, dipolar and steric interactions, hydrogen and chemical bonding and surface ... See full document

... A theoretical analysis is presented of a nematic liquid crystal confined between substrates patterned with squares that promote vertical and planar alignment. Two approaches are used to elucidate the ... See full document

... shown nematic behaviour which is an interesting finding. The nematic phase range however decreases with the increase in the chain length which is evident from the DSC and POM ... See full document

... For confirming the validity and the accuracy of the system, we first make measurements on a prototype calamitic liquid crystal 5CB. The contribution of surface polarization from both surfaces of the HAN cell is ... See full document

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... We present results of single and three pulse photoselection studies of the dynamics of a fluorescent probe (Oxazine 4) in the nematic phase of the liquid crystal 4-n-pentyl-4’-cyanobiphenyl (5CB). The ... See full document

... for all t. In general, the winding number is precisely the charge of the defect. In actual liquid crystal systems, energetics strongly disfavors extra brushes because these would correspond to regions of large ... See full document

... Q S (2) where S is the uniaxial scalar parameter, and the unit vector n is the nematic director pointing along the local uniaxial ordering direction. In Equation (2), S can have either sign: when it is positive ... See full document

... It has been shown experimentally (see, for example, Refs. 9,34) that the dielectric anisotropy of nematic LCs doped with strongly polar (ferroelec- tric) NPs is dramatically increased. Indeed, a very small molar ... See full document

... Nematic liquid crystals in two dimensions have point topological defects called disclinations, singularities in the director field around which the director rotates by an integer multiple of π radians ... See full document

... the liquid crystal, resulting from sources other than the motion of the disclination itself, and that in such circumstances the disclination is transported with a velocity equal to the sum of the velocities ... See full document

... confined liquid crystals as a dispersing medium in driving particle ...matic liquid crystals (NLCs) are made of rod-like molecules that tend to co-align with their neighbors, in a field called ... See full document

... the nematic phases formed from bent-core mesogens was just ...biaxial nematic phase has proven more elusive than early studies suggested, the nematic phases of these compounds have offered a rich ... See full document

... It proves convenient to introduce the schematic diagram of a biaxial plate to describe the necessary directors for a biaxial nematic and to this end we follow the description used by Carlsson and Leslie [27]. This ... See full document