Matej Cvetko (Avtor), Milan Ambrožič (Avtor), Samo Kralj (Avtor)

Povzetek

We study the influence of external electric or magnetic field B on orientational ordering of nematic liquid crystals or of other rod-like objects (e.g. nanotubes immersed in a liquid) in the presence of random anisotropy field type of disorder. The Lebwohl-Lasher lattice type of semi-microscopic approach is used at zero temperature. Therefore, results are valid well below the transition into the isotropic phase. We calculate the correlation function of systems as a function of B, concentration p of impurities imposing random anisotropy field disorder, the disorder strength W and system dimensionality (2D and 3D systems). In order to probe memory effects we calculate correlation length ▫$\xi$▫ for random and homogeneous initial configurations. We determine the crossover fields Bc(p) separating roughly the ordered and disordered regime. Memory effects are apparent only in the latter case, i.e. for B < Bc.

Ključne besede

tekoči kristali;spomin;nered;liquid crystals;memory effect;disorder;

Podatki

Jezik: Angleški jezik
Leto izida:
Tipologija: 1.01 - Izvirni znanstveni članek
Organizacija: UM FNM - Fakulteta za naravoslovje in matematiko
UDK: 620.1/.2
COBISS: 17410312 Povezava se bo odprla v novem oknu
ISSN: Y506-6603
Št. ogledov: 1895
Št. prenosov: 357
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: Slovenski jezik
Sekundarne ključne besede: nered;teorem Imry-Ma;tekoči kristali;spomin;orientacijski red;
URN: URN:SI:UM:
Vrsta dela (COBISS): Znanstveno delo
Strani: str. 1-14
Letnik: ǂVol. ǂ6
Zvezek: ǂno. ǂ2
Čas izdaje: 2010
DOI: 10.3762/bjoc.6.2
ID: 8723831