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Title: The Terahertz Dynamics of an Aqueous Nanoparticle Suspension: An Inelastic X-ray Scattering Study

Abstract

We used the high-resolution Inelastic X-ray Scattering beamline of the Advanced Photon Source at Argonne National Laboratory to measure the terahertz spectrum of pure water and a dilute aqueous suspension of 15 nm diameter spherical Au nanoparticles (Au-NPs). We observe that, despite their sparse volume concentration of about 0.5%, the immersed NPs strongly influence the collective molecular dynamics of the hosting liquid. We investigate this effect through a Bayesian inference analysis of the spectral lineshape, which elucidates how terahertz transport properties of water change upon Au-NP immersion. In particular, we observe a nearly complete disappearance of the longitudinal acoustic mode and a mildly decreased ability to support shear wave propagation.

Authors:
 [1];  [2];  [1]; ORCiD logo [3];  [4]; ORCiD logo [5]; ORCiD logo [6];  [7]; ORCiD logo [7]
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  1. Operative Group in Grenoble (OGG) (France); Inst. Laue-Langevin (ILL), Grenoble (France)
  2. Univ. di Macerata, Macerata (Italy)
  3. Univ. di Firenze, Fiorentino (Italy)
  4. Consiglio Nazionale delle Ricerche (CNR), Sesto Fiorentino (Italy)
  5. Univ. of Grenoble (France)
  6. Argonne National Lab. (ANL), Argonne, IL (United States)
  7. Brookhaven National Lab. (BNL), Upton, NY (United States)
Publication Date:
Research Org.:
Argonne National Laboratory (ANL), Argonne, IL (United States); Brookhaven National Laboratory (BNL), Upton, NY (United States). National Synchrotron Light Source II (NSLS-II)
Sponsoring Org.:
USDOE Office of Science (SC), Basic Energy Sciences (BES); Ente Cassa di Risparmio Firenze; Ministero dell’Istruzione dell’Università e della Ricerca Italiano
OSTI Identifier:
1630288
Alternate Identifier(s):
OSTI ID: 1638817
Report Number(s):
BNL-216166-2020-JAAM
Journal ID: ISSN 2079-4991; NANOKO; 159892; TRN: US2200654
Grant/Contract Number:  
AC02-06CH11357; SC0012704; 2016-0866; PRIN2017-2017Z55KCW; PRIN2017-2017Z55
Resource Type:
Accepted Manuscript
Journal Name:
Nanomaterials
Additional Journal Information:
Journal Volume: 10; Journal Issue: 5; Journal ID: ISSN 2079-4991
Publisher:
MDPI
Country of Publication:
United States
Language:
English
Subject:
77 NANOSCIENCE AND NANOTECHNOLOGY; 75 CONDENSED MATTER PHYSICS, SUPERCONDUCTIVITY AND SUPERFLUIDITY; inelastic neutron scattering; inelastic X-ray scattering; phonon propagation; nanoparticles; model choice; Bayesian inference

Citation Formats

De Francesco, Alessio, Scaccia, Luisa, Formisano, Ferdinando, Guarini, Eleonora, Bafile, Ubaldo, Maccarini, Marco, Alatas, Ahmet, Cai, Yong Q., and Cunsolo, Alessandro. The Terahertz Dynamics of an Aqueous Nanoparticle Suspension: An Inelastic X-ray Scattering Study. United States: N. p., 2020. Web. doi:10.3390/nano10050860.
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De Francesco, Alessio, Scaccia, Luisa, Formisano, Ferdinando, Guarini, Eleonora, Bafile, Ubaldo, Maccarini, Marco, Alatas, Ahmet, Cai, Yong Q., & Cunsolo, Alessandro. The Terahertz Dynamics of an Aqueous Nanoparticle Suspension: An Inelastic X-ray Scattering Study. United States. https://doi.org/10.3390/nano10050860
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De Francesco, Alessio, Scaccia, Luisa, Formisano, Ferdinando, Guarini, Eleonora, Bafile, Ubaldo, Maccarini, Marco, Alatas, Ahmet, Cai, Yong Q., and Cunsolo, Alessandro. Wed . "The Terahertz Dynamics of an Aqueous Nanoparticle Suspension: An Inelastic X-ray Scattering Study". United States. https://doi.org/10.3390/nano10050860. https://www.osti.gov/servlets/purl/1630288.
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@article{osti_1630288,
title = {The Terahertz Dynamics of an Aqueous Nanoparticle Suspension: An Inelastic X-ray Scattering Study},
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 Cunsolo, Alessandro},
abstractNote = {We used the high-resolution Inelastic X-ray Scattering beamline of the Advanced Photon Source at Argonne National Laboratory to measure the terahertz spectrum of pure water and a dilute aqueous suspension of 15 nm diameter spherical Au nanoparticles (Au-NPs). We observe that, despite their sparse volume concentration of about 0.5%, the immersed NPs strongly influence the collective molecular dynamics of the hosting liquid. We investigate this effect through a Bayesian inference analysis of the spectral lineshape, which elucidates how terahertz transport properties of water change upon Au-NP immersion. In particular, we observe a nearly complete disappearance of the longitudinal acoustic mode and a mildly decreased ability to support shear wave propagation.},
doi = {10.3390/nano10050860},
journal = {Nanomaterials},
number = 5,
volume = 10,
place = {United States},
year = {Wed Apr 29 00:00:00 EDT 2020},
month = {Wed Apr 29 00:00:00 EDT 2020}
}
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Journal Article:
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Publisher's Version of Record
https://doi.org/10.3390/nano10050860
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Cited by: 4 works
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Figures / Tables:

Figure 1 Figure 1: A cascade of spectra measured in the aqueous suspension 15 nm diameter Au-NPs (dots and error bars) and pure water (solid line) at the Q values specified in the plot. Data are normalized to the respective maxima and vertically offset by an amount proportional to Q. The lowestmore » Q spectra are also compared with the energy resolution function after a similar normalization (red dashed curve).« less
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