Self-Diffusion in Simple Liquids as a Random Walk Process

It is demonstrated that self-diffusion in dense liquids can be considered a random walk process; its characteristic length and time scales are identified. This represents an alternative to the often assumed hopping mechanism of diffusion in the liquid state. The approach is illustrated using the one...

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Main Author: Sergey A. Khrapak
Format: Article
Language:English
Published: MDPI AG 2021-12-01
Series:Molecules
Subjects:
Online Access:https://www.mdpi.com/1420-3049/26/24/7499
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author Sergey A. Khrapak
author_facet Sergey A. Khrapak
author_sort Sergey A. Khrapak
collection DOAJ
description It is demonstrated that self-diffusion in dense liquids can be considered a random walk process; its characteristic length and time scales are identified. This represents an alternative to the often assumed hopping mechanism of diffusion in the liquid state. The approach is illustrated using the one-component plasma model.
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spelling doaj.art-1b483d9cbd5b412295b440e422f55c3b2023-11-23T09:45:02ZengMDPI AGMolecules1420-30492021-12-012624749910.3390/molecules26247499Self-Diffusion in Simple Liquids as a Random Walk ProcessSergey A. Khrapak0Joint Institute for High Temperatures, Russian Academy of Sciences, 125412 Moscow, RussiaIt is demonstrated that self-diffusion in dense liquids can be considered a random walk process; its characteristic length and time scales are identified. This represents an alternative to the often assumed hopping mechanism of diffusion in the liquid state. The approach is illustrated using the one-component plasma model.https://www.mdpi.com/1420-3049/26/24/7499self-diffusion in liquidstransport properties of liquidsrandom walk processviscosity of liquidsone-component plasmacollective motion in liquids
spellingShingle Sergey A. Khrapak
Self-Diffusion in Simple Liquids as a Random Walk Process
Molecules
self-diffusion in liquids
transport properties of liquids
random walk process
viscosity of liquids
one-component plasma
collective motion in liquids
title Self-Diffusion in Simple Liquids as a Random Walk Process
title_full Self-Diffusion in Simple Liquids as a Random Walk Process
title_fullStr Self-Diffusion in Simple Liquids as a Random Walk Process
title_full_unstemmed Self-Diffusion in Simple Liquids as a Random Walk Process
title_short Self-Diffusion in Simple Liquids as a Random Walk Process
title_sort self diffusion in simple liquids as a random walk process
topic self-diffusion in liquids
transport properties of liquids
random walk process
viscosity of liquids
one-component plasma
collective motion in liquids
url https://www.mdpi.com/1420-3049/26/24/7499
work_keys_str_mv AT sergeyakhrapak selfdiffusioninsimpleliquidsasarandomwalkprocess