Enhanced diffraction efficiency in a photorefractive liquid crystal cell with poly(9-vinylcarbazole)-infiltrated mesoporous Ti[O.sub.2] layers

Article Abstract:

A layer-structured photorefractive liquid crystal (PR-LC) system with novel photoconductive layers composed of [C.sub.60]-doped poly(9-vinylcarbazole) (PVK)/Ti[O.sub.2] nanocomposite is reported. The enhanced diffraction efficiency is attributed to enhanced local density of photogenerated positive charges arising from the rapid drain of electrons to the mesoporous Ti[O.sub.2] layer.

Science & research, Research, Nanotechnology, Photoconductivity, Chemical properties

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Phase behavior of nanoparticles in a thermotropic liquid crystal

Article Abstract:

The outstanding behavior of a nanocomposite system composed of the thermotropic liquid crystal 5CB doped with nanoparticles of the magnetic iron oxide maghemite (gamma-Fe2O3) is described. The results reveals that the I-N transition is associated with a reversible gathering of nanoparticles inside droplets of the ferronematic phase coexisting with a nonmagnetic nematic host phase.

France, Molecular structure, Nanoparticles

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Biocompatible lipid-based liquid crystals and emulsions

Article Abstract:

Optical microscopy and nuclear magnetic resonance (NMR) methods are used to investigate the phase behavior of the ternary system glycerol trioleate/sodium oleate/water (GTO/NaO/W). The results help in understanding the phase behavior of lipid and surfactants that are found as ingredients of pharmacological products.

All Other Basic Organic Chemical Manufacturing, CHEMICALS AND ALLIED PRODUCTS, Optical Instrument and Lens Manufacturing, Optical instruments and lenses, Glycerine, Optical Microscopes & Parts, Analysis, Nuclear magnetic resonance spectroscopy, Glycerol, Glycerin, Optical microscopes

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