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Št. zadetkov: 6
Smectic A herringbone patterns
Samo Kralj, Emmanuelle Lacaze, George Cordoyiannis, Zdravko Kutnjak
Objavljeni znanstveni prispevek na konferenci
Oznake: tekoči kristali;vzorci;strukturni prehodi;ne zaključna dela;liquid crystals;patterns;structural transitions;
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 structu ...
Leto: 2014 Vir: Fakulteta za naravoslovje in matematiko (UM FNM)
Criticality controlling mechanisms in nematic liquid crystals
Maha Zid, George Cordoyiannis, Zdravko Kutnjak, Samo Kralj
Izvirni znanstveni članek
Oznake: nematic liquid crystals;critical behavior;
We theoretically study the generic mechanisms that could establish critical behavior in nematic liquid crystals (NLCs). The corresponding free energy density terms should exhibit linear coupling with the nematic order parameter and, via this coupling, enhance the nematic order. We consider both temp ...
Leto: 2024 Vir: Fakulteta za naravoslovje in matematiko (UM FNM)
Confined liquid crystaline 5CB in 2D thermodynamic space
Sebastian Pawlus, Jana Osinska, Sylwester J. Rzoska, Samo Kralj, George Cordoyiannis
Samostojni znanstveni sestavek ali poglavje v monografski publikaciji
Oznake: fizika;tekoči kristali;kompleksna dinamika;defekti;naključni pritiski;visoki pritiski;physics;liquid crystals;complex dynamics;random constraints;high pressures;
Results of preliminary broadband dielectric spectroscopy studies in a wide range of temperatures and pressures range for a mixture of rod-like liquid crystalline 4-cyano-4-pentylalkylbiphenyl (5CB) and hydrophilic silica spheres (Aerosil 300) are shown. Pretransitional anomaly, observed previously i ...
Leto: 2007 Vir: Fakulteta za naravoslovje in matematiko (UM FNM)
History-dependent patterns in randomly perturbed nematic liquid crystals
Amid Ranjkesh Siahkal, Milan Ambrožič, George Cordoyiannis, Zdravko Kutnjak, Samo Kralj
Izvirni znanstveni članek
Oznake: liquid crystals;
We study the characteristics of nematic structures in a randomly perturbed nematic liquid crystal (LC) phase. We focus on the impact of the samples history on the universal behavior. The obtained results are of interest for every randomly perturbed system exhibiting a continuous symmetry-breaking ph ...
Leto: 2013 Vir: Fakulteta za naravoslovje in matematiko (UM FNM)
Experimental advances in nanoparticle-driven stabilization of liquid-crystalline blue phases and twist-grain boundary phases
George Cordoyiannis, Marta Lavrič, Vasileios Tzitzios, Maja Trček, Ioannis Lelidis, George Nounesis, Samo Kralj, Jan Thoen, Zdravko Kutnjak
Pregledni znanstveni članek
Oznake: ne zaključna dela;liquid crystals;nanoparticles;quantum dots;reduced-graphene oxide;calorimetry;microscopy;blue phases;twist-grain boundary phases;disclination lines;screw dislocations;
Recent advances in experimental studies of nanoparticle-driven stabilization of chiral liquid-crystalline phases are highlighted. The stabilization is achieved via the nanoparticles’ assembly in the defect lattices of the soft liquid-crystalline hosts. This is of significant importance for understan ...
Leto: 2021 Vir: Fakulteta za naravoslovje in matematiko (UM FNM)
Calorimetric and optical investigation of the nematic, splay-nematic, and ferroelectric nematic phases of RM734 liquid crystal
Marta Lavrič, Nerea Sebastián Ugarteche, Calum Jordan Gibb, Richard J. Mandle, Alenka Mertelj, Nikola Novak, George Cordoyiannis
Izvirni znanstveni članek
Oznake: tekoči kristali;ferroelektrika;
RM734 is one of the first two liquid crystal compounds reported to exhibit the ferroelectric nematic phase. At the early stage of its characterisation, a direct nematic – to – ferroelectric nematic phase transition was reported for this compound. However, subsequent studies revealed the presence of ...
Leto: 2025 Vir: Institut Jožef Stefan (IJS)
Št. zadetkov: 6
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