Author:
De Francesco Alessio,Scaccia Luisa,Formisano Ferdinando,Guarini Eleonora,Bafile Ubaldo,Maccarini Marco,Zhang Yugang,Nykypanchuck Dmytro,Alatas Ahmet,Cunsolo Alessandro
Abstract
AbstractIn this work, we investigate the possibility of controlling the acoustic damping in a liquid when nanoparticles are suspended in it. To shed light on this topic, we performed Inelastic X-Ray Scattering (IXS) measurements of the terahertz collective dynamics of aqueous suspensions of nanospheres of various materials, size, and relative concentration, either charged or neutral. A Bayesian analysis of measured spectra indicates that the damping of the two acoustic modes of water increases upon nanoparticle immersion. This effect seems particularly pronounced for the longitudinal acoustic mode, which, whenever visible at all, rapidly damps off when increasing the exchanged wavevector. Results also indicate that the observed effect strongly depends on the material the immersed nanoparticles are made of.
Funder
Ministero dell’Istruzione dell’Università e della Ricerca Italiano
National Synchrotron Light Source II
Publisher
Springer Science and Business Media LLC
Cited by
2 articles.
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