Effect of an external field on capillary waves in a dipolar fluid

Koski, Jason P.; Moore, Stan Gerald; Grest, Gary S.; Stevens, Mark J.

doi:10.1103/PhysRevE.96.063106

Effect of an external field on capillary waves in a dipolar fluid

Journal Article · Wed Dec 06 00:00:00 EST 2017 · Physical Review E

DOI:https://doi.org/10.1103/PhysRevE.96.063106· OSTI ID:1499036

Koski, Jason P. ^[1]; Moore, Stan Gerald ^[1]; Grest, Gary S. ^[1]; Stevens, Mark J. ^[1]

Sandia National Lab. (SNL-NM), Albuquerque, NM (United States)

The role of an external field on capillary waves at the liquid-vapor interface of a dipolar fluid is investigated using molecular dynamics simulations. For fields parallel to the interface, the interfacial width squared increases linearly with respect to the logarithm of the size of the interface across all field strengths tested. Here, the value of the slope decreases with increasing field strength, indicating that the field dampens the capillary waves. With the inclusion of the parallel field, the surface stiffness increases with increasing field strength faster than the surface tension. For fields perpendicular to the interface, the interfacial width squared is linear with respect to the logarithm of the size of the interface for small field strengths, and the surface stiffness is less than the surface tension. Above a critical field strength that decreases as the size of the interface increases, the interface becomes unstable due to the increased amplitude of the capillary waves.

View Accepted Manuscript (DOE)

Research Organization:: Sandia National Laboratories (SNL-NM), Albuquerque, NM (United States)

Sponsoring Organization:: USDOE National Nuclear Security Administration (NNSA)

Grant/Contract Number:: AC04-94AL85000; NA0003525

OSTI ID:: 1499036

Alternate ID(s):: OSTI ID: 1411483

Report Number(s):: SAND--2019-2233J; 672999

Journal Information:: Physical Review E, Journal Name: Physical Review E Journal Issue: 6 Vol. 96; ISSN PLEEE8; ISSN 2470-0045

Publisher:: American Physical Society (APS)Copyright Statement

Country of Publication:: United States

Language:: English

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Cited By (4)

Electromechanics of the liquid water vapour interface Zhang, Chao; Sprik, Michiel Physical Chemistry Chemical Physics, Vol. 22, Issue 19 https://doi.org/10.1039/c9cp06901a	journal	January 2020
Experimental verification of anomalous surface tension temperature dependence at the interface between coexisting liquid-gas phases in magnetic and Stockmayer fluids Ivanov, Aleksey S. Physics of Fluids, Vol. 31, Issue 5 https://doi.org/10.1063/1.5094854	journal	May 2019
Electromechanics of the liquid water vapour interface. Zhang, Chao; Sprik, Michiel Apollo - University of Cambridge Repository https://doi.org/10.17863/cam.48749	text	January 2020
Electromechanics of the liquid water vapour interface Zhang, Chao; Sprik, Michiel arXiv https://doi.org/10.48550/arxiv.1912.10540	text	January 2019

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