Results 71 to 80 of about 7,138,349 (365)
CrystalsAzo-containing liquid crystal elastomers are photomechanical materials that can be actuated via illumination. The photomechanical response is a result of the photoisomerization of the azo moiety, which produces bulk stresses in the material.
Anastasiia Svanidze +5 more
doaj +1 more source
Scientific Reports, 2021 In this study, the response time of a 4 mm-aperture hole-patterned liquid crystal (HLC) lens has been significantly improved with doping of N-benzyl-2-methyl-4-nitroaniline (BNA) and rutile titanium dioxide nanoparticle (TiO2 NP) nanocomposite.
Che Ju Hsu +5 more
doaj +1 more source
Modelling nematohydrodynamics in liquid crystal devices [PDF]
Computer Physics Communications vol. 147/1-2, 7-12 (2002)., 2002 We formulate a lattice Boltzmann algorithm which solves the hydrodynamic equations of motion for nematic liquid crystals. The applicability of the approach is demonstrated by presenting results for two liquid crystal devices where flow has an important role to play in the switching.
arxiv +1 more source
Crystals, 2020 Liquid crystals were discovered by Friedrich Reinitzer in 1888 when he observed colors in cholesterol derivatives that are characteristic of highly birefringent materials [...]
openaire +2 more sources
Antiferroelectric liquid crystals [PDF]
Journal de Physique Lettres, 1981 Dielectric investigations have been undertaken in two thermotropic liquid crystal systems exhibiting a smectic A2 phase (i.e. with the layer spacing equal to twice the molecular length). The postulated antiferroelectric ordering has been supported by these measurements.
Benguigui, Ludovic, Hardouin, F.
openaire +4 more sources
Advanced Engineering Materials, EarlyView.The study presents an efficient simulation approach for the polymer laser powder bed fusion process polymers process, validated with polyamide 12, polyamide 6, and polyetherketoneketone. It shows that inter layer time affects part density, with 90s yielding dense parts.
Claas Bierwisch +4 more
wiley +1 more source
Chiral nematic liquid crystal microlenses
Scientific Reports, 2017 Nematic liquid crystals (NLCs) of achiral molecules and racemic mixtures of chiral ones form flat films and show uniform textures between circular polarizers when suspended in sub-millimeter size grids and immersed in water. On addition of chiral dopants
Piotr Popov +4 more
doaj +1 more source
Thermally Functional Liquid Crystal Networks by Magnetic Field Driven Molecular Orientation.
ACS Macro Letters, 2016 Aligned liquid crystal networks were synthesized by photopolymerization of liquid crystal monomers in the presence of magnetic fields. Grazing incident wide-angle X-ray scattering was used to characterize the degree of molecular alignment of mesogen ...
Jungwoo Shin +5 more
semanticscholar +1 more source
Advanced Engineering Materials, EarlyView.A hybrid system for de‐icing made of gradient polymer coatings, deposited on aluminum coupled with an electromechanical system, is demonstrated as an effective and durable strategy for reducing drastically ice adhesion. The system is capable of detaching ice blocks over the coating in less than 1 s, regardless of the ice type and covered area ...
Gabriel Hernández Rodríguez +8 more
wiley +1 more source
Effects of Photopatterning Conditions on Azimuthal Surface Anchoring Strength
CrystalsSpatially varying alignment of liquid crystals is essential for research and applications. One widely used method is based on the photopatterning of thin layers of azo-dye molecules, such as Brilliant Yellow (BY), that serve as an aligning substrate for ...
Nilanthi P. Haputhanthrige +2 more
doaj +1 more source