Organic photomechanical materials

T Kim, L Zhu, RO Al‐Kaysi, CJ Bardeen - ChemPhysChem, 2014 - Wiley Online Library
Organic molecules can transform photons into Angstrom‐scale motions by undergoing
photochemical reactions. Ordered media, for example, liquid crystals or molecular crystals …

Curvature in nematic elastica responding to light and heat

M Warner, CD Modes, D Corbett - Proceedings of the …, 2010 - royalsocietypublishing.org
Nematic elastic bodies can develop a gradient of response to heat, light and other stimuli.
They then bend and develop curvature in a complex manner depending on director field …

Nonlinear light-induced vibration behavior of liquid crystal elastomer beam

AM Parrany - International Journal of Mechanical Sciences, 2018 - Elsevier
Recent studies have shown the coupling of optical and mechanical energy in a class of
liquid crystal elastomers that contain light-sensitive molecules. As shown experimentally in …

[HTML][HTML] A large deflection light-induced bending model for liquid crystal elastomers under uniform or non-uniform illumination

L Jin, Y Lin, Y Huo - International journal of solids and structures, 2011 - Elsevier
In this paper, we propose a large deflection model for the light-induced bending of liquid
crystal elastomers, in which we consider the in-plane membrane force and the geometrical …

Thermodynamics and mechanics of photochemcially reacting polymers

R Long, HJ Qi, ML Dunn - Journal of the Mechanics and Physics of Solids, 2013 - Elsevier
We develop a thermodynamics and mechanics theory for polymers that when irradiated with
light, undergo photochemical reactions that alter their macromolecular structure, eg, by bond …

Polarization dependence of optically driven polydomain elastomer mechanics

D Corbett, M Warner - Physical Review E—Statistical, Nonlinear, and Soft …, 2008 - APS
We model how polarized and unpolarized light can cause mechanical response in
polydomain nematic and related photoelastomers. The reduction of order by heating and the …

A gradient model of light-induced bending in photochromic liquid crystal elastomer and its nonlinear behaviors

L Jin, Y Yan, Y Huo - International Journal of Non-Linear Mechanics, 2010 - Elsevier
Photochromic liquid crystal elastomer was recently reported to be able to deform largely and
bend under illumination. In this paper, considering the opto-chemical process and the …

Surface deformation of nematic elastomers under striped illumination

LH He - Physical Review E—Statistical, Nonlinear, and Soft …, 2007 - APS
Nematic elastomers containing azobenzene chromophores are activated upon
photoabsorption. We study the surface deformation of such elastomers under striped …

Photoinduced surface topography of nematic elastomers: a Green function approach

HT Chen, LH He - Journal of Physics: Condensed Matter, 2008 - iopscience.iop.org
This paper studies photoinduced surface deformation of nematic elastomers containing
azobenzene molecules. In the framework of a phenomenological model, a unified approach …

Effect of self-heating on photo-mechanical behavior of nematic elastomers

X Jiang, T Zhang, S Ding, Y Huo - Thermochimica acta, 2010 - Elsevier
The temperature increase due to self-heating and its effect on the photo-mechanical
behavior were studied theoretically for photochromic nematic elastomers under light …