Understanding the asymmetry between advancing and receding microscopic contact angles

Omori, T.; Kobayashi, Y.; Yamaguchi, Y. et al.

Soft Matter, 2019, 15(19), 3923-3928

Number of Access:539（2025-08-14 04:05 Counts）

Identifier to cite or link to this item: https://hdl.handle.net/11094/82371

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Title
Understanding the asymmetry between advancing and receding microscopic contact angles
Creator
NRID
1000070467546 1000070467546
CreatorName
Omori, T.
CreatorName
Kobayashi, Y.
NRID
1000030346192 1000030346192
ORCID
0000-0002-8000-8437 0000-0002-8000-8437
researchmap permalink
yasutaka_yamaguchi yasutaka_yamaguchi
Scopus Author ID
15849815900 15849815900
CreatorName
Yamaguchi, Y.
CreatorName
Kajishima, T.
Description
T. Omori, Y. Kobayashi, Y. Yamaguchi, T. Kajishima. Understanding the asymmetry between advancing and receding microscopic contact angles. Soft Matter, 2019, 15(19), 3923-2928. https://doi.org/10.1039/C9SM00521H.
Abstract
By means of molecular dynamics simulation, the advancing and receding microscopic contact angles were analyzed for a shear flow of two mono-atomic fluids confined between parallel non-polar solid walls. We defined the microscopic dynamic contact angle based on the coarse-grained microscopic density distribution of the fluids (the instantaneous interface method [Willard and Chandler, J. Phys. Chem. B, 2010, 114, 1954-1958]) near the moving contact line. We have found that the asymmetric change of fluid density near the wall with respect to the moving contact line results in a different dependence between the advancing and receding contact angles on the contact line velocity in a system where the two fluids across the interface have unequal wettability to the solid wall. This difference between the advancing and receding contact angles leads to different flow resistance caused by the advancing and receding contact lines, which should have impact on the industrial applications of the fine fluid transportation with contact lines.
Publisher
Royal Society of Chemistry
Source Title
Soft Matter
Volume (Issue)
15(19)
Page
3923-3928
Date of Issued
2019-05-21
Language
English
Handle URL
https://hdl.handle.net/11094/82371
PISSN
1744683X
eISSN
17446848
NCID
AA12068335
Relation.isVersionOf
DOI (Publisher Version)
https://doi.org/10.1039/C9SM00521H
Relation.isIdenticalTo
PMID
31011723
Access Rights
open access
CopyRight
Reproduced from Ref. Soft matter with permission from the Royal Society of Chemistry.
oaire:version
Accepted Manuscript
Category
学術雑誌論文 Journal Article