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Title: Onset of interfacial waves in the terahertz spectrum of a nanoparticle suspension

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.

Authors:
 [1];  [2];  [1]; ORCiD logo [3]; ORCiD logo [4]; ORCiD logo [5]; ORCiD logo [6]; ORCiD logo [7];  [7]; ORCiD logo [7]
+ Show Author Affiliations
  1. Consiglio Nazionale delle Ricerche, Grenoble (France); Institut Laue-Langevin (ILL), Grenoble (France)
  2. Università di Macerata (Italy)
  3. Università di Firenze (Italy)
  4. Consiglio Nazionale delle Ricerche (Italy)
  5. Université Grenoble-Alpes (France)
  6. Argonne National Laboratory, Upton, NY (United States)
  7. Brookhaven National Lab. (BNL), Upton, NY (United States)
Publication Date:
Research Org.:
Brookhaven National Lab. (BNL), Upton, NY (United States); Argonne National Lab. (ANL), Argonne, IL (United States)
Sponsoring Org.:
USDOE Office of Science (SC), Basic Energy Sciences (BES)
OSTI Identifier:
1646587
Alternate Identifier(s):
OSTI ID: 1658897
Report Number(s):
BNL-216242-2020-JAAM
Journal ID: ISSN 2470-0045; 2470-0053; TRN: US2203059
Grant/Contract Number:  
SC0012704; AC02-06CH11357
Resource Type:
Accepted Manuscript
Journal Name:
Physical Review E
Additional Journal Information:
Journal Volume: 102; Journal Issue: 2; Journal ID: ISSN 2470-0045
Publisher:
American Physical Society (APS)
Country of Publication:
United States
Language:
English
Subject:
75 CONDENSED MATTER PHYSICS, SUPERCONDUCTIVITY AND SUPERFLUIDITY; Lifetimes & widths; Phonons; Colloids; Nanoparticles; Suspensions; X-ray scattering

Citation Formats

De Francesco, Alessio, Scaccia, Luisa, Formisano, Ferdinando, Guarini, Eleonora, Bafile, Ubaldo, Maccarini, Marco, Alatas, Ahmet, Cai, Yong Q., Nykypanchuk, Dmytro, and Cunsolo, Alessandro. Onset of interfacial waves in the terahertz spectrum of a nanoparticle suspension. United States: N. p., 2020. Web. doi:10.1103/physreve.102.022601.
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De Francesco, Alessio, Scaccia, Luisa, Formisano, Ferdinando, Guarini, Eleonora, Bafile, Ubaldo, Maccarini, Marco, Alatas, Ahmet, Cai, Yong Q., Nykypanchuk, Dmytro, & Cunsolo, Alessandro. Onset of interfacial waves in the terahertz spectrum of a nanoparticle suspension. United States. https://doi.org/10.1103/physreve.102.022601
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De Francesco, Alessio, Scaccia, Luisa, Formisano, Ferdinando, Guarini, Eleonora, Bafile, Ubaldo, Maccarini, Marco, Alatas, Ahmet, Cai, Yong Q., Nykypanchuk, Dmytro, and Cunsolo, Alessandro. Mon . "Onset of interfacial waves in the terahertz spectrum of a nanoparticle suspension". United States. https://doi.org/10.1103/physreve.102.022601. https://www.osti.gov/servlets/purl/1646587.
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@article{osti_1646587,
title = {Onset of interfacial waves in the terahertz spectrum of a nanoparticle suspension},
author = {De Francesco, Alessio and Scaccia, Luisa and Formisano, Ferdinando and Guarini, Eleonora and Bafile, Ubaldo and Maccarini, Marco and Alatas, Ahmet and Cai, Yong Q. and Nykypanchuk, Dmytro and Cunsolo, Alessandro},
abstractNote = {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.},
doi = {10.1103/physreve.102.022601},
journal = {Physical Review E},
number = 2,
volume = 102,
place = {United States},
year = {Mon Aug 03 00:00:00 EDT 2020},
month = {Mon Aug 03 00:00:00 EDT 2020}
}
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Journal Article:
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Publisher's Version of Record
https://doi.org/10.1103/physreve.102.022601
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