Graded Alignment of Polymer Liquid Crystalline Film Prepared under Magnetic Field

2000 ◽  
Vol 29 (11) ◽  
pp. 1296-1297 ◽  
Author(s):  
Masafumi Yamato ◽  
Tsunehisa Kimura
Keyword(s):  
Magnetic Field ◽  
Liquid Crystalline ◽  
Crystalline Film ◽  
Polymer Liquid

Orientation of a longitudinal polymer liquid crystal in a constant magnetic field

Polymer ◽  
1999 ◽  
Vol 40 (6) ◽  
pp. 1441-1449 ◽  
Author(s):  
Witold Brostow ◽  
Elena A. Faitelson ◽  
Mihail G. Kamensky ◽  
Vadim P. Korkhov ◽  
Yuriy P. Rodin
Keyword(s):  
Magnetic Field ◽  
Liquid Crystal ◽  
Constant Magnetic Field ◽  
Polymer Liquid ◽  
Polymer Liquid Crystal

scholarly journals Multiresponsive polymeric microstructures with encoded predetermined and self-regulated deformability

2018 ◽  
Vol 115 (51) ◽  
pp. 12950-12955 ◽  
Author(s):  
Yuxing Yao ◽  
James T. Waters ◽  
Anna V. Shneidman ◽  
Jiaxi Cui ◽  
Xiaoguang Wang ◽  
...  
Keyword(s):  
Magnetic Field ◽  
Transition Temperature ◽  
Energy Harvesting ◽  
Liquid Crystalline ◽  
Soft Robotics ◽  
Stimuli Responsive ◽  
Out Of Plane ◽  
Deformation Behaviors ◽  
Deformation Modes ◽  
Biological Organisms

Dynamic functions of biological organisms often rely on arrays of actively deformable microstructures undergoing a nearly unlimited repertoire of predetermined and self-regulated reconfigurations and motions, most of which are difficult or not yet possible to achieve in synthetic systems. Here, we introduce stimuli-responsive microstructures based on liquid-crystalline elastomers (LCEs) that display a broad range of hierarchical, even mechanically unfavored deformation behaviors. By polymerizing molded prepolymer in patterned magnetic fields, we encode any desired uniform mesogen orientation into the resulting LCE microstructures, which is then read out upon heating above the nematic–isotropic transition temperature (TN–I) as a specific prescribed deformation, such as twisting, in- and out-of-plane tilting, stretching, or contraction. By further introducing light-responsive moieties, we demonstrate unique multifunctionality of the LCEs capable of three actuation modes: self-regulated bending toward the light source at T < TN–I, magnetic-field–encoded predetermined deformation at T > TN–I, and direction-dependent self-regulated motion toward the light at T > TN–I. We develop approaches to create patterned arrays of microstructures with encoded multiple area-specific deformation modes and show their functions in responsive release of cargo, image concealment, and light-controlled reflectivity. We foresee that this platform can be widely applied in switchable adhesion, information encryption, autonomous antennae, energy harvesting, soft robotics, and smart buildings.

The influence of a magnetic field on the morphology and thermomechanical properties of a liquid crystalline epoxy carbon composite

2018 ◽  
Vol 39 (S4) ◽  
pp. E2573-E2583 ◽  
Author(s):  
Beata Mossety-Leszczak ◽  
Maciej Kisiel ◽  
Piotr Szałański ◽  
Magdalena Włodarska ◽  
Urszula Szeluga ◽  
...  
Keyword(s):  
Magnetic Field ◽  
Liquid Crystalline ◽  
Carbon Composite ◽  
Thermomechanical Properties ◽  
Liquid Crystalline Epoxy

Broadband Reflection Liquid Crystalline Film Prepared by Temperature Gradient

2012 ◽  
Vol 27 (6) ◽  
pp. 724-729
Author(s):  
李克轩 LI Ke-xuan ◽  
曹晖 CAO Hui ◽  
程紫辉 CHENG Zi-hui ◽  
张立培 ZHANG Li-pei ◽  
武晓娟 WU Xiao-juan ◽  
...  
Keyword(s):  
Temperature Gradient ◽  
Liquid Crystalline ◽  
Crystalline Film
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