We used inelastic x-ray scattering to gain insight into the complex terahertz dynamics of a diluted Aunanoparticle 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.
Onset of interfacial waves in the terahertz spectrum of a nanoparticle suspension / De Francesco, Alessio; Scaccia, Luisa; Formisano, Ferdinando; Guarini, Eleonora; Bafile, Ubaldo; Maccarini, Marco; Alatas, Ahmet; Cai, Yong Q.; Nykypanchuk, Dmytro; Cunsolo, Alessandro. - In: PHYSICAL REVIEW. E. - ISSN 2470-0045. - STAMPA. - 102:(2020), pp. 1-6. [10.1103/PhysRevE.102.022601]
Onset of interfacial waves in the terahertz spectrum of a nanoparticle suspension
Guarini, EleonoraWriting – Review & Editing
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2020
Abstract
We used inelastic x-ray scattering to gain insight into the complex terahertz dynamics of a diluted Aunanoparticle 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.File | Dimensione | Formato | |
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