Black lipid membranes: Visualizing the structure, dynamics, and substrate dependence of membranes

Article Abstract:

The structure and long-time dynamics of suspended lipid bilayers made of 1-stearoyl-2-oleoyl-sn-glycero-3-phosphoethanolamine (SOPE) in the gel phase was interrogated using electrical measurements co-recorded with second harmonic generation (SHG) micrographs. SHG microscopy was shown to be an efficient method for distinguishing between the regions of bilayer and annulus as well as probing structural and dynamical variations within a single bilayer.

Dynamics, Dynamics (Mechanics), Structure

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Thermally induced fluid reversed hexagonal ([H.sub.II]) mesophase

Article Abstract:

The microstructures of the ordered lamellar phase ([L.sub.c]) and the reverse hexagonal phase ([H.sub.II]) in a glycerol monooleate (GMO)/tricaprylin (TAG)/water mixture are characterized as a function of temperature. The fluidity of the [H.sub.II] phase is described by the reduction in the domain size and cylinder length, which is characterized by higher mobility of the GMO, lower mobility of the water and a dehydration process.

Technology application, Nuclear magnetic resonance spectroscopy, Chemical properties, Dehydration (Chemical process)

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Inference of the evolution from caged dynamics to cooperative relaxation in glass-formers from dielectric relaxation data

Article Abstract:

Broadband dielectric data of glycerol and thritol as well as several non-associating van der Waals liquids are used to show the presence of near constant loss (NCL) in their short-term dynamics. The results states that the increase in number of carbon items in a molecule causes a decrease in the number of hydrogen bonds and enhances the intermolecular coupling between the relaxing molecules.

Analysis, Spectra, Dielectric relaxation, Van der Waals forces

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