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

Abstract

The work deduces orientational order parameters in the nematic and twist-bend nematic phases. An homologous series of dimers is studied using Polarized Raman Spectroscopy.

Free volume, molecular grains, self-organisation, and anisotropic entropy: machining materials

“…The data was taken from refs. [10,11,20,[22][23][24][25][26][27][28], and recent publications also support this analysis [29][30][31][32][33].…”

Investigating the Cusp between the nano- and macro-sciences in supermolecular liquid-crystalline twist-bend nematogens

“…Data was taken from ref. 23,41,42,50,51,57,58 and is presented in tabulated form alongside molecular structures in the ESI. † Fig.…”

The Dependency of Nematic and Twist-bend Mesophase Formation on Bend Angle

“…The discovery of a lower temperature nematic-like phase in bimesogens1, the phase later being identified as the ‘twist-bend nematic phase’ (N TB )23456789101112, has motivated the synthesis of a large number of novel compounds in an effort to understand what molecular features give rise to this unique mesophase1314151617181920212223242526. Despite a great deal of research activity on the N TB phase, a consensus concerning the local structure remains elusive, and consequently alternate models to the ‘twist-bend nematic’ have been proposed272829.…”