Issue 2, 2015

The temperature dependence of the heliconical tilt angle in the twist-bend nematic phase of the odd dimer CB7CB

Abstract

We report precise birefringence measurements in the nematic, N, and in the twist-bend nematic, NTB, phases of the odd liquid crystal dimer CB7CB. The birefringence results obtained in large monodomains of the NTB phase strongly support its heliconical structure with doubly degenerate handedness and provide the temperature dependence of the conical tilt angle, θ. The birefringence measured in planar wall defects separating the monodomains with opposite sign of the chirality suggests a splay-bend structure of the nematic in this region, enabling a smooth transition between the adjacent right- and left-handed heliconical domains.

Graphical abstract: The temperature dependence of the heliconical tilt angle in the twist-bend nematic phase of the odd dimer CB7CB

Article information

Article type
Paper
Submitted
27 Aug 2014
Accepted
16 Oct 2014
First published
16 Oct 2014

J. Mater. Chem. C, 2015,3, 318-328

Author version available

The temperature dependence of the heliconical tilt angle in the twist-bend nematic phase of the odd dimer CB7CB

C. Meyer, G. R. Luckhurst and I. Dozov, J. Mater. Chem. C, 2015, 3, 318 DOI: 10.1039/C4TC01927J

To request permission to reproduce material from this article, please go to the Copyright Clearance Center request page.

If you are an author contributing to an RSC publication, you do not need to request permission provided correct acknowledgement is given.

If you are the author of this article, you do not need to request permission to reproduce figures and diagrams provided correct acknowledgement is given. If you want to reproduce the whole article in a third-party publication (excluding your thesis/dissertation for which permission is not required) please go to the Copyright Clearance Center request page.

Read more about how to correctly acknowledge RSC content.

Social activity

Spotlight

Advertisements