Coulombic wall slip of concentrated soft-particle suspensions

Michael Adams; Wei Liu; Zhibing Zhang; Peter Fryer

doi:10.1063/1.4812119

Coulombic wall slip of concentrated soft-particle suspensions

Research output: Chapter in Book/Report/Conference proceeding › Conference contribution

Abstract

The coefficients of friction of concentrated soft-particle suspensions (tomato paste and a microgel suspension) were measured as a function of the slip velocity for a number of substrates. The data are interpreted using a micro-elastohydrodynamic model that is consistent with significant bulk frictional dissipation and an increase in the number of particle-wall contacts with increasing normal stress. The origin of the Coulombic slip, which has not been observed previously for pastes, is ascribed to the sensitivity of the lubricating film thickness.

Original language	English
Title of host publication	AIP Conference Proceedings
Pages	1067-1070
Number of pages	4
Volume	1542
DOIs	https://doi.org/10.1063/1.4812119
Publication status	Published - 2013
Event	7th International Conference on Micromechanics of Granular Media: Powders and Grains 2013 - Sydney, NSW, Australia Duration: 8 Jul 2013 → 12 Jul 2013

Conference

Conference	7th International Conference on Micromechanics of Granular Media: Powders and Grains 2013
Country/Territory	Australia
City	Sydney, NSW
Period	8/07/13 → 12/07/13

Keywords

coefficient of friction
micro-elastohydrodynamic lubrication
Soft particle suspension

ASJC Scopus subject areas

General Physics and Astronomy

Access to Document

10.1063/1.4812119

Cite this

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title = "Coulombic wall slip of concentrated soft-particle suspensions",

abstract = "The coefficients of friction of concentrated soft-particle suspensions (tomato paste and a microgel suspension) were measured as a function of the slip velocity for a number of substrates. The data are interpreted using a micro-elastohydrodynamic model that is consistent with significant bulk frictional dissipation and an increase in the number of particle-wall contacts with increasing normal stress. The origin of the Coulombic slip, which has not been observed previously for pastes, is ascribed to the sensitivity of the lubricating film thickness.",

keywords = "coefficient of friction, micro-elastohydrodynamic lubrication, Soft particle suspension",

author = "Michael Adams and Wei Liu and Zhibing Zhang and Peter Fryer",

year = "2013",

doi = "10.1063/1.4812119",

language = "English",

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volume = "1542",

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T1 - Coulombic wall slip of concentrated soft-particle suspensions

AU - Adams, Michael

AU - Liu, Wei

AU - Zhang, Zhibing

AU - Fryer, Peter

PY - 2013

Y1 - 2013

N2 - The coefficients of friction of concentrated soft-particle suspensions (tomato paste and a microgel suspension) were measured as a function of the slip velocity for a number of substrates. The data are interpreted using a micro-elastohydrodynamic model that is consistent with significant bulk frictional dissipation and an increase in the number of particle-wall contacts with increasing normal stress. The origin of the Coulombic slip, which has not been observed previously for pastes, is ascribed to the sensitivity of the lubricating film thickness.

AB - The coefficients of friction of concentrated soft-particle suspensions (tomato paste and a microgel suspension) were measured as a function of the slip velocity for a number of substrates. The data are interpreted using a micro-elastohydrodynamic model that is consistent with significant bulk frictional dissipation and an increase in the number of particle-wall contacts with increasing normal stress. The origin of the Coulombic slip, which has not been observed previously for pastes, is ascribed to the sensitivity of the lubricating film thickness.

KW - coefficient of friction

KW - micro-elastohydrodynamic lubrication

KW - Soft particle suspension

UR - https://www.scopus.com/pages/publications/84880715975

U2 - 10.1063/1.4812119

DO - 10.1063/1.4812119

M3 - Conference contribution

AN - SCOPUS:84880715975

SN - 9780735411661

VL - 1542

SP - 1067

EP - 1070

BT - AIP Conference Proceedings

T2 - 7th International Conference on Micromechanics of Granular Media: Powders and Grains 2013

Y2 - 8 July 2013 through 12 July 2013

ER -

Coulombic wall slip of concentrated soft-particle suspensions

Abstract

Conference

Keywords

ASJC Scopus subject areas

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Cite this