Title :
Phase-Transitions in Langmuir-Blodgett and Cast Films of a Ferroelectric Liquid Crystal
Author :
Wen, Z. ; Jiang, Q. ; Du, Y.P. ; Ozaki, Y.
Author_Institution :
Key Laboratory of Automobile Materials (Jilin University), Ministry of Education, and Department of Materials Science and Engineering, Jilin University, Changchun 130022, China
Abstract :
Langmuir-Blodgett films and cast films of a ferroelectric liquid crystal of sec-butyl 6-(4-(nonyloxy) benzoyloxy)-2-naphthoate (FLC-1) have been fabricated and its thermal behavior was investigated using infrared spectroscopy at elevated temperature combined with principle 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 is also found, which is confirmed by calorimetric measurement.
Keywords :
Crystal microstructure; Crystallization; Ferroelectric films; Ferroelectric materials; Infrared spectra; Liquid crystals; Nonlinear optics; Optical microscopy; Spectroscopy; Temperature;
Conference_Titel :
Emerging Technologies - Nanoelectronics, 2006 IEEE Conference on
Print_ISBN :
0-7803-9357-0
DOI :
10.1109/NANOEL.2006.1609775
