Samo Kralj (Avtor), Zlatko Bradač (Avtor), Vlad Popa-Nita (Avtor)

Povzetek

We study the influence of nanoparticles (NPs) on liquid crystal (LC) ordering. As regards the structural ordering we consider NPs as a source of a quenched random field. Roughly such a situation is encountered in mixtures of LCs and aerosil NPs (aerosil NPs are spherular ones). Using the semi-microscopic lattice model and Brownian molecular simulation we show that after a quench from the isotropic phase a quasi-stable domain pattern forms. The characteristic size of an average domain is inversely proportional to the concentration of NPs, and domain patterns exhibit memory effects. In the study of the phase behaviour we limit consideration to NPs resembling LC molecules. A Landau-type free energy expression is derived for the mixture, originating from the Maier-Saupe molecular approach. We show that the resulting phase behaviour exhibits the slave-master behaviour as the temperature or pressure is varied.

Ključne besede

tekoči kristali;nematični kristali;nanodelci;vplivi nanodelcev;

Podatki

Jezik: Angleški jezik
Leto izida:
Tipologija: 1.08 - Objavljeni znanstveni prispevek na konferenci
Organizacija: UM FNM - Fakulteta za naravoslovje in matematiko
UDK: 532.783
COBISS: 16068104 Povezava se bo odprla v novem oknu
ISSN: 0953-8984
Št. ogledov: 1419
Št. prenosov: 105
Ocena: 0 (0 glasov)
Metapodatki: JSON JSON-RDF JSON-LD TURTLE N-TRIPLES XML RDFA MICRODATA DC-XML DC-RDF RDF

Ostali podatki

Sekundarni jezik: Angleški jezik
Sekundarne ključne besede: liquid crystals;nematic crystals;nanoparticles;influences;liquid crystal ordering;
URN: URN:SI:UM:
Strani: str. 244112-1-244112-7
Letnik: ǂNo. ǂ24
Zvezek: ǂVol. ǂ20
Čas izdaje: 2008
DOI: 10.1088/0953-8984/20/24/244112
ID: 8724029