Impact of nanoparticles on nematic ordering in square wells

Mitja Slavinec (Author), Eva Klemenčič (Author), Milan Ambrožič (Author), Marjan Krašna (Author)

Abstract

Nematic liquid crystalline structures within square wells are studied numerically using both Lebwohl-Lasher lattice semimicroscopic and the Landau-de Gennes mesoscopic approach. At lateral boundary wall strong planar anchoring is enforced. The cell thickness h along the z Cartesian coordinate is assumed to be smaller than the characteristic square well size R. Using semimicroscopic modelling we restrict to effectively two-dimensional systems which we study in terms of the tensor nematic order parameter. We consider impact of appropriate nanoparticles (NPs) on nematic configuration for cases where R becomes comparable to the biaxial order parameter correlation length. In this case a star-like order reconstruction biaxial profile could be formed in absence of NPs. We demonstrate existence of a rich variety of different nematic structures, including topological defects, which are enabled by presence of appropriate NPs.

Keywords

tekoči kristali;nano delci;nematična urejenost;kvadratna kletka;simulacije;grafični prikaz;liquid crystals;nanoparticles;nematic ordering;square well;software simulation;visualization;

Data

Language:	English
Year of publishing:	2014
Typology:	1.01 - Original Scientific Article
Organization:	UM FF - Faculty of Arts
UDC:	532.783
COBISS:	21186312
ISSN:	1687-8108
Views:	778
Downloads:	314
Average score:	0 (0 votes)
Metadata:

Other data

Secondary language:	Slovenian
Secondary keywords:	tekoči kristali;nano delci;nematična urejenost;kvadratna kletka;simulacije;grafični prikaz;
URN:	URN:SI:UM:
Type (COBISS):	Scientific work
Pages:	str. 1-11
Volume:	ǂVol. ǂ2015
Issue:	ǂart. ID ǂ532745
Chronology:	2015
DOI:	10.1155/2015/532745
ID:	9142739