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Phase Behaviour of Parallel Hard Rods in Confinement: an Onsager Theory Study
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SYSNO ASEP 0355047 Document Type J - Journal Article R&D Document Type Journal Article Subsidiary J Článek ve WOS Title Phase Behaviour of Parallel Hard Rods in Confinement: an Onsager Theory Study Author(s) Malijevský, Alexandr (UCHP-M) RID, ORCID, SAI
Varga, S. (HU)Source Title Journal of Physics-Condensed Matter. - : Institute of Physics Publishing - ISSN 0953-8984
Roč. 22, č. 17 (2010), , , 175002-1-12Number of pages 12 s. Language eng - English Country GB - United Kingdom Keywords spherocylinders ; stability ; columnar Subject RIV CF - Physical ; Theoretical Chemistry R&D Projects IAA400720710 GA AV ČR - Academy of Sciences of the Czech Republic (AV ČR) CEZ AV0Z40720504 - UCHP-M (2005-2011) UT WOS 000276547300003 DOI 10.1088/0953-8984/22/17/175002 Annotation It is shown that the presence of hard walls inhibits the second order nematic-smectic A phase transition irrespective of the value of the wall-to-wall separation. Instead, due to accommodation problems of the cylinders into the pore, an infinite number of first order layering phase transitions appears. Coexisting curves, corresponding to the equilibrium between two phases having n and n + 1 smectic-like periods, are bounded with lower critical points. The gap between the average densities of the coexisting phases shrinks with increasing pore width, while the properties of the critical points monotonically move towards those of the nematic-smectic A phase transition of the bulk system. The effect of only one hard wall is related to the bulk nematic-smectic A phase transition since a critical wetting transition of the wall induced layering takes place. Workplace Institute of Chemical Process Fundamentals Contact Eva Jirsová, jirsova@icpf.cas.cz, Tel.: 220 390 227 Year of Publishing 2011
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