Results 31 to 40 of about 2,302,942 (280)

Ferronematic Liquid Crystal Polymers and Elastomers

MATERIAIS 2022, 2022
Liquid crystal polymers, through covalent bonding, combine the spontaneous long range orientational order of the liquid crystal state with the entropically driven random coil configurations of the skeletal polymer chains in a single material [1]. [...]
Reeves, Sarah J., Davis, Fred J., Mitchell, Geoffrey R.   +2 more
openaire   +2 more sources

Four-Dimensional Printing of Temperature-Responsive Liquid Crystal Elastomers with Programmable Shape-Changing Behavior

Biomimetics, 2023
Liquid crystal elastomers (LCEs) are polymer networks that exhibit anisotropic liquid crystalline properties while maintaining the properties of elastomers, presenting reversible high-speed and large-scale actuation in response to external stimuli ...
Shuyi Li, Zhengyi Song, Yuyan Fan, Dongsong Wei, Yan Liu   +4 more
doaj   +1 more source

Multifunctional Ionene Liquid Crystal Elastomers. [PDF]

ACS Appl Mater Interfaces
Incorporating ionic species into the backbone of liquid crystalline elastomers offers a template for tailoring thermomechanical and electromechanical properties. Thermotropic ionene liquid crystalline elastomers (iLCEs) containing imidazolium-based cationic groups are capable of work-dense (∼14 J/kg), large-strain (>30%) actuation at modest ...
Kuzel Z, Clement A, Tabrizi M, AboHussien A, Irla S, Seresht HB, Chun Y, Tristram-Nagle S, Liu Q, Shankar MR.   +9 more
europepmc   +4 more sources

Modeling and simulation of liquid-crystal elastomers

Physical Review E, 2011
We consider a continuum model describing the dynamic behavior of nematic liquid crystal elastomers (LCEs) and implement a numerical scheme to solve the governing equations. In the model, the Helmholtz free energy and Rayleigh dissipation are used, within a Lagrangian framework, to obtain the equations of motion. The free energy consists of both elastic
Zhu, Wei, Shelley, Michael, Palffy-Muhoray, Peter   +2 more
openaire   +4 more sources

Layered liquid crystal elastomer actuators [PDF]

Nature Communications, 2018
AbstractLiquid crystalline elastomers (LCEs) are soft, anisotropic materials that exhibit large shape transformations when subjected to various stimuli. Here we demonstrate a facile approach to enhance the out-of-plane work capacity of these materials by an order of magnitude, to nearly 20 J/kg.
Tyler Guin, Michael J. Settle, Benjamin A. Kowalski, Anesia D. Auguste, Richard V. Beblo, Gregory W. Reich, Timothy J. White   +6 more
openaire   +3 more sources

Elasticity of polydomain liquid crystal elastomers [PDF]

Journal of the Mechanics and Physics of Solids, 2012
We model polydomain liquid-crystal elastomers by extending the neo-classical soft and semi-soft free energies used successfully to describe monodomain samples. We show that there is a significant difference between polydomains cross-linked in homogeneous high symmetry states then cooled to low symmetry polydomain states and those cross-linked directly ...
Biggins, J. S., Warner, M., Bhattacharya, K.   +2 more
openaire   +3 more sources

Morphing of liquid crystal surfaces by emergent collectivity

Nature Communications, 2019
Liquid crystal networks can morph their shape in response to electrical stimulus. Here the authors provide a detailed description of their deformation mechanism and introduce a method to observe the dynamic surface of liquid crystal elastomers.
Hanne M. van der Kooij, Slav A. Semerdzhiev, Jesse Buijs, Dirk J. Broer, Danqing Liu, Joris Sprakel   +5 more
doaj   +1 more source

Internal constraints and arrested relaxation in main-chain nematic elastomers

Nature Communications, 2021
Nematic liquid crystal elastomers (N-LCE) have a slow relaxation, which can prevent their shape recovery. Here, the authors examine mechanical hysteresis in a series of main-chain N-LCE to understand how the inherent nematic order retards and arrests the
Takuya Ohzono, Kaoru Katoh, Hiroyuki Minamikawa, Mohand O. Saed, Eugene M. Terentjev   +4 more
doaj   +1 more source

Artificial Phototropic Systems for Enhanced Light Harvesting Based on a Liquid Crystal Elastomer

Advanced Intelligent Systems, 2021
Oblique‐incidence‐induced energy‐density loss (OEL) is a universal problem which affects nearly all processes involving electromagnetic waves, especially sunlight harvesting.
Yichen Yan, Yusen Zhao, Yousif Alsaid, Bowen Yao, Yucheng Zhang, Shuwang Wu, Ximin He   +6 more
doaj   +1 more source

Liquid crystal-based elastomers in tissue engineering

, 2022
Liquid crystal elastomers (LCEs) play role in tissue engineering investigations, with the combination of orientational ordering generated by liquid crystal (LC) moieties and the elastic capabilities of polymers.
Tuncgovde E.B., Kemiklioglu E., Gurboga B.   +2 more
core   +2 more sources