Phase Transitions, Order Parameters and Threshold Voltages in Liquid Crystal Systems Doped with Disperse Orange Dye and Carbon Nanoparticles

Akkurt F., Kaya N., Alicilar A.

FULLERENES NANOTUBES AND CARBON NANOSTRUCTURES, cilt.17, sa.6, ss.616-624, 2009 (SCI-Expanded) identifier identifier

  • Yayın Türü: Makale / Tam Makale
  • Cilt numarası: 17 Sayı: 6
  • Basım Tarihi: 2009
  • Doi Numarası: 10.1080/15363830903291374
  • Dergi Adı: FULLERENES NANOTUBES AND CARBON NANOSTRUCTURES
  • Derginin Tarandığı İndeksler: Science Citation Index Expanded (SCI-EXPANDED), Scopus
  • Sayfa Sayıları: ss.616-624
  • Anahtar Kelimeler: Disperse orange dye, Fullerene, Guest-host system, Liquid crystal, Nanotube, ELECTRICAL-CONDUCTIVITY, DIFFRACTION EFFICIENCY, NANOTUBES
  • Gazi Üniversitesi Adresli: Evet

Özet

At the first part of this work, three different textile dyes (disperse orange 11, 13 and 37) were separately doped (1% w/w) to the nematic liquid crystal (E7). Single-walled nanotube and fullerene C60 in a small amount (0.05% w/w) were mixed to these solutions at the second stage. Order parameters, threshold voltages, textures and clearing temperatures for all of mixtures were determined. Co-use of dyes and nanoparticles as dopant was resulted in notable increases in order parameters. While threshold voltages required for the change of order parameter decreased, an important change in the texture and clearing temperature of the liquid crystal was not observed.