Results 71 to 80 of about 16,732 (315)

Liquid crystal elastomer coatings with programmed response of surface profile

Nature Communications, 2018
Liquid crystal elastomers are anisotropic rubbers which can be actuated by an external trigger. Here the authors develop elastomer coatings with pre-patterned molecular orientation that induces deterministic topography changes in response to changes in ...
Greta Babakhanova, Taras Turiv, Yubing Guo, Matthew Hendrikx, Qi-Huo Wei, Albert P. H. J. Schenning, Dirk J. Broer, Oleg D. Lavrentovich   +7 more
doaj   +1 more source

Symmetries and Elasticity of Nematic Gels

, 2001
A nematic liquid-crystal gel is a macroscopically homogeneous elastic medium with the rotational symmetry of a nematic liquid crystal. In this paper, we develop a general approach to the study of these gels that incorporates all underlying symmetries ...
B. Jacobsen, C. A. Guymon, C.-C. Chang, C.N. Bowman, D.E. Feldman, D.E. Feldman, D.R. Nelson, E.M. Terentjev, G. Grinstein, G. Verwey, G.C. Verwey, G.R. Mitchell, H. Finkelmann, H. Finkelmann, H. Finkelmann, J.A. Aronovitz, K. Saunders, L. Golubovic, L. Golubović, L. Radzihovsky, L. Radzihovsky, L. Radzihovsky, L. Radzihovsky, L. Radzihovsky, Leo Radzihovsky, M. Bowick, M. Warner, M. Warner, M. Warner, M. Warner, N.A. Clark, P. Blandon, P. Le Doussal, Peter D. Olmsted, R. Zentel, Ranjan Mukhopadhyay, S.M. Clarke, S.M. Clarke, S.T. Kim, S.V. Fridrikh, T. Bellini, T. C. Lubensky, Xiangjun Xing, Y. Mao   +43 more
core   +1 more source

Bio‐Inspired Molecular Events in Poly(Ionic Liquids)

Advanced Functional Materials, EarlyView.
Originating from dipolar and polar inter‐ and intra‐chain interactions of the building blocks, the topologies and morphologies of poly(ionic liquids) (PIL) govern their nano‐ and micro‐processibility. Modulating the interactions of cation‐anion pairs with aliphatic dipolar components enables the tunability of properties, facilitated by “bottom‐up ...
Jiahui Liu, Marek W. Urban
wiley   +1 more source

Thermomechanical response of liquid crystal elastomers: role of crosslinker density

Materials Research Express
In this work thermomechanical properties of main-chain liquid crystal elastomers (MC-LCEs) with different degrees of crosslinking were investigated, and gradual loss of thermomechanical response was observed on repetitive measurements.
N Derets, V Domenici, A Rešetič, B Zalar   +3 more
doaj   +1 more source

Localized soft elasticity in liquid crystal elastomers

Nature Communications, 2016
Ruggedized stretchable electronic devices motivate the development of globally stretchable yet locally stiff materials. Here, Ware et al. programme the self-organization of liquid crystal elastomers to yield stretchable materials of homogenous ...
Taylor H. Ware, John S. Biggins, Andreas F. Shick, Mark Warner, Timothy J. White   +4 more
doaj   +1 more source

Reconfigurable Antennas Based on Self-Morphing Liquid Crystalline Elastomers

IEEE Access, 2016
Pattern- and frequency-reconfigurable antennas are developed using metalized liquid crystalline elastomers that can change their geometries from flat to helical shapes.
John S. Gibson, Xueli Liu, Stavros V. Georgakopoulos, Jeong Jae Wie, Taylor H. Ware, Timothy J. White   +5 more
doaj   +1 more source

Phases and Transitions in Phantom Nematic Elastomer Membranes [PDF]

, 2004
Motivated by recently discovered unusual properties of bulk nematic elastomers, we study a phase diagram of liquid-crystalline polymerized phantom membranes, focusing on in-plane nematic order.
D. R. Nelson, J. A. Aronovitz, L. Radzihovsky, Leo Radzihovsky, P G. de Gennes, Xiangjun Xing   +5 more
core   +1 more source

Bio‐Inspired Magnetically Tunable Structural Colors from Elliptical Self‐Assembled Block Copolymer Microparticles

Advanced Functional Materials, EarlyView.
Cephalopod‐inspired photonic microparticles with dynamic structural coloration are fabricated via confined self‐assembly of linear block copolymers into ellipsoids containing stacked lamellae. Embedded superparamagnetic nanoparticles enable rapid magnetic alignment, restoring vivid, angle‐dependent color.
Gianluca Mazzotta, Simone Bertucci, Jose Mendoza‐Carreño, Agustín Mihi, Paola Lova, Davide Comoretto, Ullrich Steiner, Marco Lattuada, Andrea Dodero   +8 more
wiley   +1 more source

Actuating and Sensing Composites of Liquid Crystal Elastomers and Poly(ionic liquid)s

Advanced Functional Materials, EarlyView.
Ionic conductive, mechanically tough, flexible, and stretchable filaments of a composite material comprising a liquid crystal elastomer and a poly(ionic liquid) are produced through 3D printing, which exhibit large actuation strain under stimulation and electrical resistance variation in response to deformation or environmental condition changes. Their
Zeping Liu, Xiaofeng Zheng, Shaoxia Zhang, Long Xu, Meng Liu, Jeremy Baribeault St‐Germain, Yue Zhao   +6 more
wiley   +1 more source

Universal Elasticity and Fluctuations of Nematic Gels

, 2002
We study elasticity of spontaneously orientationally-ordered amorphous solids, characterized by a vanishing transverse shear modulus, as realized for example by nematic elastomers and gels.
G. C. Verwey, H. Finkelmann, Leo Radzihovsky, O. Stenull, Peter D. Olmsted, X. Xing, Xiangjun Xing   +6 more
core   +1 more source