[PDF] Top 20 On the biaxiality of smectic C and ferroelectric liquid crystals

... dielectric biaxiality and the mono-polar scheme act to greatly enhance discrimination between select and non-select resultants, as described in section ...available liquid crystal materials such as SCE8 ... See full document

... the smectic layer thickness 共 ...tric smectic-C * phase, calculated from Berreman’s 4 ⫻ 4-matrix ap- proach for different values of ␸ 0 and the averaged value as a ... See full document

... large biaxiality but the tilt angle is still rather ...° C兲, it still showed the behavior similar to SmC ⴱ 关image 共g兲兴 at a temperature 70 ° C where SmC FI2 ⴱ would have normally ap- peared under the ... See full document

... various ferroelectric liquid crystals to find the average molecular direction of the shortest axis in the perfectly unwound state by using tilted conoscopic ...the biaxiality. Some materials ... See full document

... of ferroelectric liquid crystals (PSFLC) has recently become an area of great interest in polymer/liquid crystal ...in liquid crystals are often enhanced mechanical properties in ... See full document

... The diffuse-cone model qualitatively explains the low layer shrinkage. However, it fails to explain the unique electro-optic response and the origin of first order phase transition of de Vries smectics. Apart from the ... See full document

... In the crystal structure of 1,18-octadecanediol, (I), shown in Fig. 1, an all-trans conformation was observed not only in the hydrocarbon skeleton but also in both terminal hydroxyl groups. The molecule is ... See full document

... Vries-type smectic liquid crystal we understand a material that essentially does not change its smectic layer spacing in connection with the transition from the orthogonal smectic A (SmA) to ... See full document

... D[LV c D[LV SDUDOOHO WR WKH VPHFWLFOD\HUV7KHERXQGDU\EHWZHHQ DGMDFHQW VODEVLVDWZLVWJUDLQERXQGDU\ 7*% PDGHRI SDUDOOHO HTXLGLVWDQW VFUHZ GLVORFDWLRQV RI WKH 6P$SKDVHZKLFKZHFDQWHUPYRUWH[OLQHVIRU WKH UHDVRQ RI WKH ... See full document

... lamellar liquid crystals such as smectic-C, hexatic smectics, and smectic-C* are endowed with in-plane orientational ...in Smectic-C* liquid crystals) ... See full document

... Here, we present a unique level of control to direct the growth of FCD arrays by inducing hierarchical assembly of multiple FCDs centered at the edges of micropillars with nonoverlapping elliptical focal curves. Below a ... See full document

... We show that the flexoelectric model of chiral and achiral modulated nematics predicts the com- pression modulus that is by orders of magnitude lower than the measured values. The descrepancy is much larger in the chiral ... See full document

... The absolute values of the primary uniaxial order parameter S in the bent-core LCs are higher than in conventional Sm-A phases which can be explained by strong polar interactions of bent molecular cores. The biaxial ... See full document

... of ferroelectric submicron particles embedded in a liq- uid crystalline ...The liquid crystal is placed in a cell of thickness L with identical homogeneous ...the liquid crystalline director to be ... See full document

... optical biaxiality has been found to be too low to ascribe it to the inherent biaxiality of the nematic phase after the effects of surfaces and other experimental errors are taken into ... See full document

... form smectic-A and/or smectic-C liquid crystals 共Sm-A and/or Sm-C兲, which are orientationally ordered fluids with a one-dimensional density ...in smectic layers, though ... 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

... Sm C * phase is observed at the angles ...the C = O group for each smectic phase are not exactly perpendicular to the absorption profile of the phenyl ...the C = O groups for each phase varies ... See full document

... the smectic layers, or the re-orientation of the c vector within or across ...the smectic layers as the vector a is assumed constant, the elastic energy density in the bulk of the liquid ... See full document

... With time the defects gradually enter the late pre-collision regime, shown in Figs.3a. Now the defect core structure of a defect seems to be influenced by the interaction with its neighbor. The order parameter profiles ... See full document