Raman scattering studies of order parameters in liquid crystalline dimers exhibiting the nematic and twist-bend nematic phases

• Published in: Journal of materials chemistry. C, Materials for optical and electronic devices Vol. 3; no. 38; pp. 17 - 116
• Main Authors: Zhang, Zhaopeng, Panov, Vitaly P, Nagaraj, Mamatha, Mandle, Richard J, Goodby, John W, Luckhurst, Geoffrey R, Jones, J. Cliff, Gleeson, Helen F
• Format: Journal Article
• Language: English
• Published: 01.01.2015
• Subjects: Dimers; Field theory; Liquid crystals; Mathematical models; Methylene; Nematic; Order parameters; Phases

Polarized Raman Spectroscopy (PRS) is used to quantify the orientational order in the conventional (N) and twist-bend (N TB ) nematic phases of a homologous series of liquid crystalline dimers. The dimers investigated have 7, 8, 9 and 11 methylene groups connecting two cyanobiphenyl mesogens and dat...