Abstract
The dielectric relaxation and anisotropy properties of 4-cyano-4'-pentylbiphenyl and salicylaldimine compound (LC1) liquid crystals have been investigated. The polarizing microscopy and differential scanning calorimetry results show that the chiral salicylaldimine compound (LC1) exhibits enantiotropic SmC* mesophases. The dielectric anisotropy of the liquid crystals changes from positive type to negative type. The critical frequency values of dielectrical anisotropy for 4-cyano-4'- pentylbiphenyl and salicylaldimine compound (LC1) were found to be 693.84 and 577.61 kHz, respectively. The dielectric
anisotropy value of 5CB/LC1 liquid crystal composite is lower than 5CB liquid crystal. It is evaluated that the 5CB/LC1 composite liquid crystal gives new dielectrical anisotropy and electrical properties.
Keywords
Liquid crystal, Dielectric anisotropy, Electrical properties.
Citation
N. YILMAZ CANLI, F. YAKUPHANOGLU, O. YASA, B. BILGIN-ERAN, Dielectric properties of N-SmC* liquid crystalline composite, Optoelectronics and Advanced Materials - Rapid Communications, 4, 6, June 2010, pp.821-827 (2010).
Submitted at: May 27, 2010
Accepted at: June 16, 2010