Motion of water in confined systems: neutrons, photons and reverse micelles

Nancy E. Levinger, Department of Chemistry, Colorado State University, Fort Collins, CO 80523-1872

When size decreases to the nanoscopic scale, properties of systems under study also change dramatically. Limited size can have substantial impact on the structure and dynamics of liquids, especially highly associated liquids like water. This presentation will discuss investigations of water motion confined to nanoscopic proportions in reverse micelles, that is, water sequestered from a nonpolar continuous phase by a surfactant layer. Results from quasielastic neutron scattering and time-resolved infrared spectroscopy experiments combine with molecular dynamics simulations to reveal details about what happens to water in these minuscule droplets.

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