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arXiv · 2409.14318

Identification by Inelastic X-Ray scattering of bulk alteration of solid dynamics due to Liquid Wetting

M. Warburton·J. Ablett·J. -P. Rueff·P. Baroni·L. Paolasini·L. Noirez
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Abstract

We examine the influence at room temperature of the deposit of a water layer on the phonon dynamics of a solid. It is shown that the water wetting at the surface of an Alumina monocrystal has deep effects on acoustic phonons, propagating over several hundred microns distance and taking place on a relatively long time scale. The effect of the wetting at the boundary is two-fold: a hardening of both transverse and longitudinal acoustic phonons is observed as well as a relaxation of internal stresses. These acoustic phonon energy changes were observed by inelastic X-ray scattering up to 40 meV energy loss, allowing us to probe the solid at different depths from the surface.

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M. Warburton, J. Ablett, J. -P. Rueff, P. Baroni, L. Paolasini, L. Noirez. 2024-09-22. Identification by Inelastic X-Ray scattering of bulk alteration of solid dynamics due to Liquid Wetting. https://arxiv.org/abs/2409.14318

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