Please use this identifier to cite or link to this item: https://hdl.handle.net/20.500.11851/7560
Title: Suppression of Phase Transitions in a Confined Rodlike Liquid Crystal
Authors: Grigoriadis, Christos
Duran, Hatice
Steinhart, Martin
Kappl, Michael
Butt, Hans-Juergen
Floudas, George
Keywords: rodlike liquid crystals
confinement
phase transitions
template synthesis
nanoporous alumina
Issue Date: 2011
Publisher: Amer Chemical Soc
Abstract: The nematic-to-isotropic, crystal-to-nematic, and supercooled liquid-to-glass temperatures are studied in the liquid crystal 4-pentyl-4'-cyanobiphenyl (5CB) confined in self-ordered nanoporous alumina. The nematic-to-isotropic and the crystal-to-nematic transition temperatures are reduced linearly with the Inverse pore diameter. The finding that the crystalline phase Is completely suppressed in pores having diameters of 35 nm and below yields an estimate of the critical nucleus size. The liquid-to-glass temperature is reduced In confinement as anticipated by the model of rotational diffusion within a cavity. These results provide the pertinent phase diagram for a confined liquid crystal and are of technological relevance for the design of liquid crystal-based devices with tunable optical, thermal, and dielectric properties.
URI: https://doi.org/10.1021/nn203448c
https://hdl.handle.net/20.500.11851/7560
ISSN: 1936-0851
1936-086X
Appears in Collections:Malzeme Bilimi ve Nanoteknoloji Mühendisliği Bölümü / Department of Material Science & Nanotechnology Engineering
PubMed İndeksli Yayınlar Koleksiyonu / PubMed Indexed Publications Collection
Scopus İndeksli Yayınlar Koleksiyonu / Scopus Indexed Publications Collection
WoS İndeksli Yayınlar Koleksiyonu / WoS Indexed Publications Collection

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