Effects of Surface Topography on Formation of Zig-zag Defects in Ssflc Devices
نویسندگان
چکیده
The cause for wide variations in the zig-zag defect density in SSFLC devices using the same alignment layer material is investigated. In this paper, we show how the topography of the surface layer due to imperfect coating techniques and materials promotes the formation of zig-zag defects. We show that if the alignment surface slope is greater than the pretilt, high densities of zig-zag defects are likely to be present.
منابع مشابه
EFFECTS OF SURFACE TOPOGRAPHY ON FORMATION OF DEFECTS IN SmC* DEVICES EXPLAINED USING AN ALTERNATIVE CHEVRON DESCRIPTION
An alternative description of the layer structure of SmC* devices is used to consider the cause for wide variations in the zig-zag defect density in such devices using the same alignment layer material. In this paper, we show how the topography of the surface layer due to imperfect coating techniques and materials promotes the formation of zig-zag defects. We show that if the alignment surface ...
متن کاملTheoretical and Experimental Investigation of Optical Properties of ZnS Zig-Zag Thin Films
Zigzag ZnS thin films prepared by thermal evaporation method using glancing angle deposition (GLAD) technique. ZnS films with zigzag structure were produced at deposition angles of 0˚, 60˚ and 80˚ at room temperature on glass substrates. Surface morphology of the films w:as char:acterized by using field emission scanning electron microscopy (FESEM). The optical properties of the specimens were i...
متن کاملDecomposed bloch walls in iron
2014 The magnetoelastic problem of a zig-zag 90° Bloch wall in iron is studied, either for a (110) or (001) wall. The elastic strains, due to magnetostriction, are calculated in both cases. The total energy of a zig-zag wall is obtained by adding, to the usual anisotropy and exchange contributions, the elastic term. Thus we find the equilibrium values for the periodicity and the angle of the zi...
متن کاملSome relations between Kekule structure and Morgan-Voyce polynomials
In this paper, Kekule structures of benzenoid chains are considered. It has been shown that the coefficients of a B_n (x) Morgan-Voyce polynomial equal to the number of k-matchings (m(G,k)) of a path graph which has N=2n+1 points. Furtermore, two relations are obtained between regularly zig-zag nonbranched catacondensed benzenid chains and Morgan-Voyce polynomials and between regularly zig-zag ...
متن کاملDefect complexes in carbon and boron nitride nanotubes.
The effect of defect complexes on the stability, structural and electronic properties of single-walled carbon nanotubes and boron nitride nanotubes is investigated using the ab initio pseudopotential density functional method implemented in the Castep code. We found more substantial atomic relaxations in the zig-zag carbon nanotube than the armchair one. We find that the B(C)B(c) defect introdu...
متن کامل