title: Phase-transitions in Langmuir-Blodgett and cast films of a ferroelectric liquid crystal.
abstract: Langmuir-Blodgett films and cast films of a ferroelectric liquid crystal of sec-butyl-6-(4-(nonyloxy)benzoyloxy)-2-naphthoate have been fabricated. Their thermal behavior was investigated using infrared spectroscopy at elevated temperature combined with principal component analysis. The result shows a new phase transition from smectic A to nematic phase, compared to the phase sequence obtained by polarizing optical microscopy. Another solid transition of different isomeric crystals was also found, which was confirmed by calorimetric measurement.
authors.affiliation: Key Laboratory of Automobile Materials, Ministry of Education, Department of Materials Science and Engineering, Jilin University, Changchun, China.
authors.forename: Zi
authors.initials: Z
authors.lastname: Wen
authors.forename: Qing
authors.initials: Q
authors.lastname: Jiang
authors.forename: Yiping
authors.initials: Y
authors.lastname: DU
authors.forename: Yukihiro
authors.initials: Y
authors.lastname: Ozaki