Next Article in Journal
Biodegradable Polymeric Architectures via Reversible Deactivation Radical Polymerizations
Next Article in Special Issue
Application of Melt-Blown Poly(lactic acid) Fibres in Self-Reinforced Composites
Previous Article in Journal
Self-Erasable Nanocone Antireflection Films Based on the Shape Memory Effect of Polyvinyl Alcohol (PVA) Polymers
Previous Article in Special Issue
Selective and Efficient Arsenic Recovery from Water through Quaternary Amino-Functionalized Silica
Article Menu
Issue 7 (July) cover image

Export Article

Open AccessArticle
Polymers 2018, 10(7), 757; https://doi.org/10.3390/polym10070757

Bending of Thin Liquid Crystal Elastomer under Irradiation of Visible Light: Finsler Geometry Modeling

Department of Industrial Engineering, National Institute of Technology, Ibaraki College, Nakane 866, Hitachinaka, Ibaraki 312-8508, Japan
Received: 15 May 2018 / Revised: 3 July 2018 / Accepted: 5 July 2018 / Published: 9 July 2018
(This article belongs to the Special Issue Polymers: Design, Function and Application)
Full-Text   |   PDF [2577 KB, uploaded 9 July 2018]   |  

Abstract

In this paper, we show that the 3D Finsler geometry (FG) modeling technique successfully explains a reported experimental result: a thin liquid crystal elastomer (LCE) disk floating on the water surface deforms under light irradiation. In the reported experiment, the upper surface is illuminated by a light spot, and the nematic ordering of directors is influenced, but the nematic ordering remains unchanged on the lower surface contacting the water. This inhomogeneity of the director orientation on/inside the LCE is considered as the origin of the shape change that drives the disk on the water in the direction opposite the movement of the light spot. However, the mechanism of the shape change is still insufficiently understood because to date, the positional variable for the polymer has not been directly included in the interaction energy of the models for this system. We find that this shape change of the disk can be reproduced using the FG model. In this FG model, the interaction between σ, which represents the director field corresponding to the directional degrees of LC, and the polymer position is introduced via the Finsler metric. This interaction, which is a direct consequence of the geometry deformation, provides a good description of the shape deformation of the LCE disk under light irradiation. View Full-Text
Keywords: liquid crystal elastomer; light irradiation; dye-doped; Monte Carlo; statistical mechanics; Finsler geometry liquid crystal elastomer; light irradiation; dye-doped; Monte Carlo; statistical mechanics; Finsler geometry
Figures

Figure 1

This is an open access article distributed under the Creative Commons Attribution License which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited. (CC BY 4.0).
SciFeed

Share & Cite This Article

MDPI and ACS Style

Koibuchi, H. Bending of Thin Liquid Crystal Elastomer under Irradiation of Visible Light: Finsler Geometry Modeling. Polymers 2018, 10, 757.

Show more citation formats Show less citations formats

Note that from the first issue of 2016, MDPI journals use article numbers instead of page numbers. See further details here.

Related Articles

Article Metrics

Article Access Statistics

1

Comments

[Return to top]
Polymers EISSN 2073-4360 Published by MDPI AG, Basel, Switzerland RSS E-Mail Table of Contents Alert
Back to Top