Results 21 to 30 of about 2,160,178 (234)

Liquid crystal elastomers wrinkling [PDF]

Nonlinearity, 2021
Abstract When a liquid crystal elastomer layer is bonded to an elastic layer, it creates a bilayer with interesting properties that can be activated by applying traction at the boundaries or by optothermal stimulation. Here, we examine wrinkling responses in three-dimensional nonlinear systems containing a monodomain liquid crystal ...
Alain Goriely, L Angela Mihai
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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

Fast algorithms for liquid crystal modelling [PDF]

, 2014
We review different modeling and computational methods to determine the Q-tensor representation of the director field alignment in the absence of defects.
Keith R. Daly, Yogesh Murugesan, Murugesan, Yogesh K., Daly, Keith R., Thomas P. Bennett, Giampaolo D'Alessandro, Bennett, Thomas P., De Matteis, Giovanni, Giovanni De Matteis, D'Alessandro, Giampaolo   +9 more
core   +1 more source

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
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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
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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

A liquid crystal biosensor for specific detection of antigens [PDF]

, 2016
Following the principle of the enzyme-linked immunosorbent assay (ELISA) pathogen detection method, we demonstrate specific sensing of goat Immunoglobulin G (IgG) by a nematic liquid crystal material.
Lawrence W. Honaker, Antal I. Jákli, Popov, Piotr, Kooijman, Edgar E., Piotr Popov, Mann, Elizabeth K., Jákli, Antal I., Elizabeth K. Mann, Edgar E. Kooijman, Honaker, Lawrence W., HONAKER, Lawrence William   +10 more
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Flexoelectric polarisation effects in nematic liquid crystal phase gratings [PDF]

, 2008
Nematic phase gratings have been studied in which a planar nematic layer of thickness 17.2 μm is sandwiched between two glass substrates coated with an alignment polymer.
Mottram, N.J., C. L. Trabi, C. V. Brown, Smith, A. A. T., Smith, A.A.T., Mottram, Nigel J., Brown, C.V., Brown, C. V., N. J. Mottram, Trabi, C.L., A. A. T. Smith, Trabi, C. L.   +11 more
core   +4 more sources