Dynamics of viscous amphiphilic films supported by elastic solid substrates

Physics – Condensed Matter

Scientific paper

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19 pages, latex, 3 figures in eps-format

Scientific paper

10.1088/0953-8984/9/37/011

The dynamics of amphiphilic films deposited on a solid surface is analyzed for the case when shear oscillations of the solid surface are excited. The two cases of surface- and bulk shear waves are studied with film exposed to gas or to a liquid. By solving the corresponding dispersion equation and the wave equation while maintaining the energy balance we are able to connect the surface density and the shear viscocity of a fluid amphiphilic overlayer with experimentally accessible damping coefficients, phase velocity, dissipation factor and resonant frequency shifts of shear waves.

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