Dielectric properties of N-SmC* liquid crystalline composite

YILMAZ CANLI N., Yakuphanoglu F., Yasa O., BİLGİN ERAN B.

Optoelectronics and Advanced Materials, Rapid Communications, cilt.4, sa.6, ss.821-827, 2010 (SCI-Expanded) identifier

  • Yayın Türü: Makale / Tam Makale
  • Cilt numarası: 4 Sayı: 6
  • Basım Tarihi: 2010
  • Dergi Adı: Optoelectronics and Advanced Materials, Rapid Communications
  • Derginin Tarandığı İndeksler: Science Citation Index Expanded (SCI-EXPANDED), Scopus
  • Sayfa Sayıları: ss.821-827
  • Anahtar Kelimeler: Dielectric anisotropy, Electrical properties, Liquid crystal
  • Yıldız Teknik Üniversitesi Adresli: Evet

Özet

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.