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Št. zadetkov: 4
Reconfiguration of nematic disclinations in plane-parallel confinements
Saša Harkai, Charles Rosenblatt, Samo Kralj
Izvirni znanstveni članek
Oznake: tekoči kristali;topologija;topološki defekti;disklinacije;rekonfiguracije;ne zaključna dela;liquid crystals;topological defects;disclinations;reconfiguration;
We study numerically the reconfiguration process of colliding |m|=1/2 strength disclinations in an achiral nematic liquid crystal (NLC). A Landau–de Gennes approach in terms of tensor nematic-order parameters is used. Initially, different pairs {m1,m2} of parallel wedge disclination lines connecting ...
Leto: 2023 Vir: Fakulteta za naravoslovje in matematiko (UM FNM)
Multiple twisted chiral nematic structures in cylindrical confinement
Milan Ambrožič, Apparao Gudimalla, Charles Rosenblatt, Samo Kralj
Izvirni znanstveni članek
Oznake: tekoči kristali;kiralnost;ograjenost;liquid crystals;chirality;confinement;
In this article, we theoretically and numerically study the chirality and saddle-splay elastic constant (K24) -enabled stability of multiple twist-like nematic liquid crystal (LC) structures in cylindrical confinement. We focus on the so-called radially z-twisted (RZT) and radially twisted (RT) con ...
Leto: 2020 Vir: Fakulteta za naravoslovje in matematiko (UM FNM)
Electric field driven reconfigurable multistable topological defect patterns
Saša Harkai, Bryce S. Murray, Charles Rosenblatt, Samo Kralj
Izvirni znanstveni članek
Oznake: line defects;topological defects;nematic liquid crystals;electric field;atomic force microscopy;numerical techniques;polarized optical microscopy;
Topological defects appear in symmetry breaking phase transitions and are ubiquitous throughout Nature. As an ideal testbed for their study, defect configurations in nematic liquid crystals (NLCs) could be exploited in a rich variety of technological applications. Here we report on robust theoretica ...
Leto: 2020 Vir: Fakulteta za naravoslovje in matematiko (UM FNM)
Annihilation of highly-charged topological defects
Eva Klemenčič, Pavlo Kurioz, Milan Ambrožič, Charles Rosenblatt, Samo Kralj
Izvirni znanstveni članek
Oznake: liquid crystals;topological defects;annihilation;order reconstruction;
We studied numerically external stimuli enforced annihilation of a pair of daughter nematic topological defect (TD) assemblies bearing a relatively strong topological charge |m|=3/2. A Landau- de Gennes phenomenological approach in terms of tensor nematic order parameter was used in an effectively t ...
Leto: 2020 Vir: Fakulteta za naravoslovje in matematiko (UM FNM)
Št. zadetkov: 4
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