Povzetek

Two qualitatively different SmA structures exhibiting herringbone-type layer patterns, to which we refer as the Defectless Smectic Herringbone (DSH) and the Dislocation Decorated Smectic Herringbone (DDSH) pattern are studied by a Landau-de Gennes-Ginzburg mesoscopic approach. Liquid crystal structures are described in terms of a nematic director field and a smectic complex order parameter. It is demonstrated that, in the proximity of the N-SmA phase transition, a melting of smectic layers could be realised even for relatively weakly-tilted smectic layers in DSH patterns (i.e. θt ≈ 100) for type I Sm4 phase. The width of melted region could be relatively large with respect to bulk values of the smectic characteristic lengths. In addition, a critical value of θt is determined at which a DDSH pattern is expected to appear.

Ključne besede

tekoči kristali;vzorci;strukturni prehodi;ne zaključna dela;liquid crystals;patterns;structural transitions;

Podatki

Jezik: Angleški jezik
Leto izida:
Tipologija: 1.08 - Objavljeni znanstveni prispevek na konferenci
Organizacija: IJS - Institut Jožef Stefan
UDK: 532.783
COBISS: 21038344 Povezava se bo odprla v novem oknu
ISSN: 1742-6596
Št. ogledov: 2045
Št. prenosov: 373
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: Fizika;Mehanika tekočin;Tekoči kristali;
URN: URN:SI:UM:
Vrsta dela (COBISS): Članek v reviji
Strani: Str. 1-10
DOI: 10.1088/1742-6596/558/1/012009
ID: 10845296