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Related Experiment Video

Updated: Apr 28, 2026

High-Contrast and Fast Photorheological Switching of a Twist-Bend Nematic Liquid Crystal

High-Contrast and Fast Photorheological Switching of a Twist-Bend Nematic Liquid Crystal

Published on: October 31, 2019

Stretchable liquid-crystal blue-phase gels.

F Castles¹, S M Morris², J M C Hung³

¹1] Centre of Molecular Materials for Photonics and Electronics, Department of Engineering, University of Cambridge, 9 JJ Thomson Avenue Cambridge CB3 0FA, UK [2] Department of Materials, University of Oxford, Parks Road Oxford OX1 3PH, UK.

Nature Materials

|June 2, 2014

Summary

This summary is machine-generated.

Researchers fabricated a stretchable blue phase I gel, a 3D photonic crystal with tunable optical properties. Mechanically deformed blue phases show a Pockels electro-optic effect, enabling new low-voltage devices.

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Last Updated: Apr 28, 2026

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Preparation of Monodomain Liquid Crystal Elastomers and Liquid Crystal Elastomer Nanocomposites

Preparation of Monodomain Liquid Crystal Elastomers and Liquid Crystal Elastomer Nanocomposites

Published on: February 6, 2016

Area of Science:

Materials Science
Polymer Science
Optoelectronics

Background:

Liquid-crystalline polymers combine optical and mechanical properties.
Stretchable liquid-crystalline polymers exist in nematic, chiral-nematic, and smectic mesophases.
These materials exhibit unique behaviors not seen in independent components.

Purpose of the Study:

To fabricate a stretchable gel of blue phase I liquid crystal.
To investigate the electro-optic and strain-optic properties of this material.
To explore its potential for low-voltage electro-optic devices.

Main Methods:

Fabrication of a stretchable blue phase I gel.
Characterization of its self-assembled 3D photonic crystal structure.
Analysis of electro-optic switching under applied voltage and strain manipulation.

Main Results:

Successful fabrication of a stretchable blue phase I gel.
Demonstration of electro-optic switchability under moderate voltage.
Observation of optical property manipulation via applied strain.
Discovery of a Pockels electro-optic effect in mechanically deformed blue phase I.

Conclusions:

Stretchable blue phase I gels are viable 3D photonic crystals.
These materials offer tunable optical properties via strain and voltage.
The observed Pockels effect presents new opportunities for low-voltage electro-optic applications.