dc.contributor.author
Balos, Vasileios
dc.contributor.author
Imoto, Sho
dc.contributor.author
Netz, Roland R.
dc.contributor.author
Bonn, Mischa
dc.contributor.author
Bonthuis, Douwe Jan
dc.contributor.author
Nagata, Yuki
dc.contributor.author
Hunger, Johannes
dc.date.accessioned
2020-11-02T12:14:04Z
dc.date.available
2020-11-02T12:14:04Z
dc.identifier.uri
https://refubium.fu-berlin.de/handle/fub188/28738
dc.identifier.uri
http://dx.doi.org/10.17169/refubium-28486
dc.description.abstract
Despite the widespread use of aqueous electrolytes as conductors, the molecular mechanism of ionic conductivity at moderate to high electrolyte concentrations remains largely unresolved. Using a combination of dielectric spectroscopy and molecular dynamics simulations, we show that the absorption of electrolytes at similar to 0.3 THz sensitively reports on the local environment of ions. The magnitude of these high-frequency ionic motions scales linearly with conductivity for a wide range of ions and concentrations. This scaling is rationalized within a harmonic oscillator model based on the potential of mean force extracted from simulations. Our results thus suggest that long-ranged ionic transport is intimately related to the local energy landscape and to the friction for short-ranged ion dynamics: a high macroscopic electrolyte conductivity is thereby shown to be related to large-amplitude motions at a molecular scale.
en
dc.format.extent
8 Seiten
dc.rights.uri
https://creativecommons.org/licenses/by/4.0/
dc.subject
dielectric-relaxation
en
dc.subject
temperature-dependence
en
dc.subject
water dynamics
en
dc.subject
spectroscopy
en
dc.subject.ddc
500 Naturwissenschaften und Mathematik::530 Physik::530 Physik
dc.title
Macroscopic conductivity of aqueous electrolyte solutions scales with ultrafast microscopic ion motions
dc.type
Wissenschaftlicher Artikel
dcterms.bibliographicCitation.articlenumber
1611
dcterms.bibliographicCitation.doi
10.1038/s41467-020-15450-2
dcterms.bibliographicCitation.journaltitle
Nature Communications
dcterms.bibliographicCitation.number
1
dcterms.bibliographicCitation.volume
11
dcterms.bibliographicCitation.url
https://doi.org/10.1038/s41467-020-15450-2
refubium.affiliation
Physik
refubium.resourceType.isindependentpub
no
dcterms.accessRights.openaire
open access
dcterms.isPartOf.eissn
2041-1723
refubium.resourceType.provider
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