Marjan Krašna (Author), Matej Cvetko (Author), Milan Ambrožič (Author)

Abstract

Orientational ordering of a homogeneous mixture of uniaxial liquid crystalline(LC) molecules and magnetic nanoparticles (NPs) is studied using the Lebwohl-Lasher lattice model. We consider cases where NPs tend to be oriented perpendicularly to LC molecules due to elastic forces. We study domain-type configurations of ensembles, which are quenched from the isotropic phase. We show that for large enough concentrations of NPs the long range uniaxial nematic ordering is replaced by short range order exhibiting strong biaxiality. This suggests that the impact of NPs on orientational ordering of LCs for appropriate concentrations of NPs is reminiscent to the influence of quenched random fields which locally enforce a biaxial ordering.

Keywords

tekoči kristali;nanodelci;nered;liquid crystals;nanoparticles;disorder;orientational order;quenched disorder;

Data

Language: English
Year of publishing:
Typology: 1.01 - Original Scientific Article
Organization: UM FNM - Faculty of Natural Sciences and Mathematics
UDC: 620.1/.2
COBISS: 17869320 Link will open in a new window
ISSN: Y506-6603
Views: 860
Downloads: 323
Average score: 0 (0 votes)
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Other data

Secondary language: Slovenian
Secondary keywords: tekoči kristali;nanodelci;nered. orientacijski red;
URN: URN:SI:UM:
Type (COBISS): Scientific work
Pages: str. 1-7
Volume: ǂVol. ǂ6
Issue: ǂno. ǂ74
Chronology: 2010
DOI: 10.3762/bjoc.6.74
ID: 10851691