Title: Investigations of phase transitions in liquid crystals by means of adiabatic scanning calorimetry
Authors: Thoen, Jan ×
Cordoyiannis, George
Glorieux, Christ #
Issue Date: 2009
Publisher: Taylor & Francis
Series Title: Liquid Crystals vol:36 issue:6-7 pages:669-684
Abstract: High resolution calorimetric techniques have substantially contributed in characterizing and understanding the delicate thermal behaviour near many phase transitions in liquid crystals. In this paper we describe a high-resolution adiabatic scanning calorimetric technique that has proven to be an important tool to discriminate between first-order and second-order phase transitions in addition to render high-resolution information on fluctuations induced pretransitional specific heat capacity behaviour. The capabilities of adiabatic scanning calorimetry are illustrated with experimental results for the isotropic to nematic and the isotropic to smectic A transitions for a series of alkylcyanobiphenyl compounds. For the nematic to smectic A transition results are presented for pure compounds and mixtures of liquid crystals as well as on the effects of added nonmesogenic solutes and nanoparticles. For chiral molecules results for phase transitions involving blue phases and twist grain boundary phases are considered.
ISSN: 0267-8292
Publication status: published
KU Leuven publication type: IT
Appears in Collections:Soft Matter and Biophysics
× corresponding author
# (joint) last author

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