20.500.12556/DKUM-66532 Smectic A herringbone patterns Two qualitatively different SmA structures exhibiting herringbone-type layer patterns, to which we refer as the Defectless Smectic Herringbone (DSH) and the Dislocation Decorated Smectic Herringbone (DDSH) pattern are studied by a Landau-de Gennes-Ginzburg mesoscopic approach. Liquid crystal structures are described in terms of a nematic director field and a smectic complex order parameter. It is demonstrated that, in the proximity of the N-SmA phase transition, a melting of smectic layers could be realised even for relatively weakly-tilted smectic layers in DSH patterns (i.e. θt ≈ 100) for type I Sm4 phase. The width of melted region could be relatively large with respect to bulk values of the smectic characteristic lengths. In addition, a critical value of θt is determined at which a DDSH pattern is expected to appear. liquid crystals patterns structural transitions tekoči kristali vzorci strukturni prehodi true true true Angleški jezik Slovenski jezik Članek v reviji 2017-06-30 09:21:42 2017-06-30 09:22:50 2024-09-25 13:24:00 2019-07-11 15:50:36 2014 0 0 str. 1-11 Letn. 558 2014 0000-00-00 NiDoloceno Objavljeno NiDoloceno 0000-00-00 0000-00-00 0000-00-00 1742-6596 532.783 10888020 21038344 10.1088/1742-6596/558/1/012009 1742-6596 URN:SI:UM:DK:XORXSPCB Journal_of_Physics_Conference_Series_2014_Kralj_et_al._Smectic_A_herringbone_patterns.pdf Journal_of_Physics_Conference_Series_2014_Kralj_et_al._Smectic_A_herringbone_patterns.pdf 1 4486BA161986A3B46A3640CC2479A111 3444a18145fbd313a98f63ca8cfc824b2e421ad43c095ff2742d86dc42bba33c 538f4f0c-7c0e-11eb-bb7a-00155d0001ca https://dk.um.si/Dokument.php?lang=slv&id=113378 http://stacks.iop.org/1742-6596/558/i=1/a=012009?key=crossref.c27ee35afbcb2ce02d6a337e1295af07 1 https://dk.um.si/Dokument.php?lang=slv&id=113376 Fakulteta za naravoslovje in matematiko 0 0 0