G
G. Cordoyiannis
Researcher at Jožef Stefan Institute
Publications - 21
Citations - 436
G. Cordoyiannis is an academic researcher from Jožef Stefan Institute. The author has contributed to research in topics: Liquid crystal & Phase transition. The author has an hindex of 11, co-authored 21 publications receiving 380 citations. Previous affiliations of G. Cordoyiannis include National and Kapodistrian University of Athens & Katholieke Universiteit Leuven.
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Journal ArticleDOI
Large electrocaloric effect in lead-free K0.5Na0.5NbO3-SrTiO3 ceramics
TL;DR: In this paper, the electrocaloric effect (ECE) of the lead-free relaxor ferroelectric 0.85K0.5NbO3-0.15SrTiO3 (KNN-STO) ceramics is investigated.
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Theoretical and experimental study of the nanoparticle-driven blue phase stabilisation
Brigita Rožič,Vasileios Tzitzios,Eva Karatairi,Uroš Tkalec,George Nounesis,Zdravko Kutnjak,G. Cordoyiannis,Riccardo Rosso,Epifanio G. Virga,Igor Muševič,Samo Kralj +10 more
TL;DR: These calculations suggest that the DCR mechanism is efficient if a local NP environment resembles the core structure of disclinations, which represent the characteristic property of BP structures, in line with high-resolution ac calorimetry and optical polarising microscopy experiments.
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The effect of graphene on liquid-crystalline blue phases
Marta Lavrič,Vassilios Tzitzios,Samo Kralj,G. Cordoyiannis,Ioannis Lelidis,George Nounesis,V. Georgakilas,Heinz Amenitsch,Aleksander Zidanšek,Zdravko Kutnjak +9 more
TL;DR: In this article, the effect of surface functionalized graphene nanosheets on the blue phase range of a chiral liquid crystal was investigated and it was shown that the resulting soft nanocomposite exhibits an increased blue phase temperature stability range for a minute concentration of dispersed graphene.
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Criticality Controlled by Cross-Linking Density in Liquid Single-Crystal Elastomers
G. Cordoyiannis,Andrija Lebar,Boštjan Zalar,S. Zumer,S. Zumer,Heino Finkelmann,Zdravko Kutnjak +6 more
TL;DR: It is shown that density variations of both rodlike and pointlike cross-links strongly affect the mean value and the dispersion of local mechanical fields in a paranematic-nematic phase transition.
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Pretransitional effects near the smectic-A-smectic-C* phase transition of hydrophilic and hydrophobic aerosil networks dispersed in ferroelectric liquid crystals
G. Cordoyiannis,Samo Kralj,Samo Kralj,George Nounesis,Zdravko Kutnjak,Slobodan Žumer,Slobodan Žumer +6 more
TL;DR: A theoretical model that takes into account the interplay of relevant mechanisms is proposed to explain the observed phenomena and the effect of chirality on the interaction of liquid crystals with aerosils is discussed.