Lyotropic Liquid Crystal
Mostrando 1-6 de 6 artigos, teses e dissertações.
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1. Caracterização mecânica e estrutural de um dispositivo PDLC baseado em hidrogéis de PAAm e cristal líquido liotrópico LP/DeOH/H2O
In this work, a novel device based on polyacrylamide (PAAm) hydrogels and KL - DeOH - H2O lyotropic liquid crystal (LLC), with potential for application as Polymer Dispersed Liquid Crystals (PDLC), was proposed and its properties characterized. The confinement of LLC promoted significant changes in spectroscopic, morphological, optical, hydrophilic, structur
Quím. Nova. Publicado em: 2014
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2. Dispersão de nanopartículas de látex em um cristal líquido liotrópico / Dispersion of nanoparticles of latex in the lyotropic liquid crystal
In this work, we studied the dynamics of agglomeration and dissociation of latex particles when inserted into a lyotropic liquid crystal. This liquid crystal is a ternary system formed by potassium laurate, decilamonium chloride and water, presenting uniaxial calamitic and discotic nematic phases (NC e ND, respectively) and a biaxial nematic phase NB. The la
Publicado em: 2008
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3. Lyotropic ferronematic liquid crystals based on new Ni, Cu and Zn Ionic magnetic fluids
The properties of lyotropic ferronematic liquid crystals based on new Ni, Cu and Zn ionic magnetic fluids are discussed. The efficiency of these new ferrofluids in the lyotropic nematic liquid crystal doping is verified and compared with the conventional surfacted ferro fluid lyotropic doping. It was observed that the structural characteristics of the lyotro
Brazilian Journal of Physics. Publicado em: 2002-06
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4. Resonance effect in isotropic phase of lyotropic liquid crystal
In this work we present experimental results that show a resonance effect in the isotropic phase of a lyotropic liquid crystal. The lyotropic mixture is made up of Potassium Laurate (KL), Decanol (DeOH) and water with three different relative concentrations: 2.62, 2.79 and 2.90 (C = [KL]/[DeOH], [KL] and [DeOH] in % molar). These mixtures have an isotropic (
Brazilian Journal of Physics. Publicado em: 2002-06
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5. Espectroscopia de lente termica : propriedades termicas de cristais liquidos
Liquid Crystals are fluids that present intermediate properties between solid and liquid, and consist of a molecular arrange with structural order. These systems are classified as Thermotropic Liquid Cristals, Lyotropie Liquid Crystals and Plastic Crystals. Since their discovery, these systems have shown to be an important area of condensed matter research.
Publicado em: 1997
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6. Ordered patterns of liquid crystal toroidal defects by microchannel confinement
In this article we present experimental results demonstrating an approach to controlling the size and spatial patterning of defect domains in a smectic liquid crystal (LC) by geometric confinement in surface-modified microchannels. By confining the LC 4′-octyl-4-cyanobiphenyl in μm-sized rectangular channels with controlled surface polarity, we were able
National Academy of Sciences.