Onset of interfacial waves in the terahertz spectrum of a nanoparticle suspension.
Phys Rev E
; 102(2-1): 022601, 2020 Aug.
Article
em En
| MEDLINE
| ID: mdl-32942392
ABSTRACT
We used inelastic x-ray scattering to gain insight into the complex terahertz dynamics of a diluted Au-nanoparticle suspension in glycerol. We observe that, albeit sparse, Au nanoparticles leave clear signatures on the dynamic response of the system, the main one being an additional mode propagating at the nanoparticle-glycerol interface. A Bayesian inferential analysis of the line shape reveals that such a mode, at variance with conventional acoustic modes, keeps a hydrodynamiclike behavior well beyond the continuous limit and down to subnanometer distances.
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MEDLINE
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En
Ano de publicação:
2020
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Article