Slip length and contact angle over hydrophobic surfaces

Roman S. Voronov; Dimitrios V. Papavassiliou; Lloyd L. Lee

doi:10.1016/j.cplett.2007.05.013

Slip length and contact angle over hydrophobic surfaces

Roman S. Voronov, Dimitrios V. Papavassiliou, Lloyd L. Lee

Research output: Contribution to journal › Article › peer-review

79 Scopus citations

Abstract

The relation between contact angle and slip length is explored using molecular dynamics for Couette flow of a Lennard-Jones fluid between graphite-like walls. Obtained results vary from the common notion that higher contact angles lead to greater slip and to more effective friction reduction. Effects of varying LJ parameters on contact angle and slip length are investigated parametrically. Results are shown in a 3D map, where the third dimension is the square root of the solid-fluid atom size ratio. The present data can be applied to developing artificial supersolvophobic surfaces that are fundamental to friction drag reduction on interfaces.

Original language	English (US)
Pages (from-to)	273-276
Number of pages	4
Journal	Chemical Physics Letters
Volume	441
Issue number	4-6
DOIs	https://doi.org/10.1016/j.cplett.2007.05.013
State	Published - Jun 25 2007
Externally published	Yes

All Science Journal Classification (ASJC) codes

General Physics and Astronomy
Physical and Theoretical Chemistry

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10.1016/j.cplett.2007.05.013

Cite this

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title = "Slip length and contact angle over hydrophobic surfaces",

abstract = "The relation between contact angle and slip length is explored using molecular dynamics for Couette flow of a Lennard-Jones fluid between graphite-like walls. Obtained results vary from the common notion that higher contact angles lead to greater slip and to more effective friction reduction. Effects of varying LJ parameters on contact angle and slip length are investigated parametrically. Results are shown in a 3D map, where the third dimension is the square root of the solid-fluid atom size ratio. The present data can be applied to developing artificial supersolvophobic surfaces that are fundamental to friction drag reduction on interfaces.",

author = "Voronov, {Roman S.} and Papavassiliou, {Dimitrios V.} and Lee, {Lloyd L.}",

note = "Funding Information: We acknowledge the support of the Office of Naval Research under Grant N00014-03-1-0684. LLL thanks the National Science Foundation (CISE/EIA 0203481) for their support. This work was carried out in collaboration with Professors Parthasarathy, and Newman at the University of Oklahoma. Computations were carried out with assistance from Henry Neeman at the OU Supercomputing Center for Education & Research. ",

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doi = "10.1016/j.cplett.2007.05.013",

language = "English (US)",

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journal = "Chemical Physics Letters",

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T1 - Slip length and contact angle over hydrophobic surfaces

AU - Voronov, Roman S.

AU - Papavassiliou, Dimitrios V.

AU - Lee, Lloyd L.

N1 - Funding Information: We acknowledge the support of the Office of Naval Research under Grant N00014-03-1-0684. LLL thanks the National Science Foundation (CISE/EIA 0203481) for their support. This work was carried out in collaboration with Professors Parthasarathy, and Newman at the University of Oklahoma. Computations were carried out with assistance from Henry Neeman at the OU Supercomputing Center for Education & Research.

PY - 2007/6/25

Y1 - 2007/6/25

N2 - The relation between contact angle and slip length is explored using molecular dynamics for Couette flow of a Lennard-Jones fluid between graphite-like walls. Obtained results vary from the common notion that higher contact angles lead to greater slip and to more effective friction reduction. Effects of varying LJ parameters on contact angle and slip length are investigated parametrically. Results are shown in a 3D map, where the third dimension is the square root of the solid-fluid atom size ratio. The present data can be applied to developing artificial supersolvophobic surfaces that are fundamental to friction drag reduction on interfaces.

AB - The relation between contact angle and slip length is explored using molecular dynamics for Couette flow of a Lennard-Jones fluid between graphite-like walls. Obtained results vary from the common notion that higher contact angles lead to greater slip and to more effective friction reduction. Effects of varying LJ parameters on contact angle and slip length are investigated parametrically. Results are shown in a 3D map, where the third dimension is the square root of the solid-fluid atom size ratio. The present data can be applied to developing artificial supersolvophobic surfaces that are fundamental to friction drag reduction on interfaces.

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DO - 10.1016/j.cplett.2007.05.013

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VL - 441

SP - 273

EP - 276

JO - Chemical Physics Letters

JF - Chemical Physics Letters

IS - 4-6

ER -

Slip length and contact angle over hydrophobic surfaces

Abstract

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