Long Term Stability of Polymer Stabilized Blue Phase Liquid Crystals

Author

Joshi, Pankaj ; De Smet, Jelle ; Xioabing Shang ; Willekens, Oliver ; Cuypers, Dieter ; Van Steenberge, Geert ; Chojnowska, Olga ; Kula, Przemyslaw ; Van Vlierberghe, Sandra ; Dubruel, Peter ; De Smet, Herbert

Author_Institution

Dept. of Electron. & Inf. Syst., Ghent Univ., Ghent, Belgium

Volume

11

Issue

9

fYear

2015

fDate

Sept. 2015

Firstpage

703

Lastpage

708

Abstract

The issue of long term stability of polymer stabilized blue phase liquid crystals was investigated. It was found that for certain liquid crystals and commonly used chiral dopant combinations, polymer stabilized blue phase liquid crystals develop dendrite like structures. These features are highly scattering and are detrimental to the uniformity of texture. Various possible causes were looked into and it was identified that crystallization of the chiral dopant leads to dendrites and a possible remedy is proposed.

Keywords

chirality; crystallisation; dendrites; liquid crystal phase transformations; liquid crystal polymers; liquid structure; polymer solutions; texture; chiral dopant; crystallization; dendrite like structures; long-term stability; polymer stabilized blue phase liquid crystals; texture uniformity; Filling; Liquid crystal displays; Liquid crystals; Photonics; Polymers; Temperature distribution; Thermal stability; Chiral dopants; dendrites; long term stability; polymer stabilized blue phase liquid crystals (BPLCs);

fLanguage

English

Journal_Title

Display Technology, Journal of

Publisher

ieee

ISSN

1551-319X

Type

jour

DOI

10.1109/JDT.2015.2431442

Filename

7105370