The influence of particle size on the magnetorheological properties of an inverse ferrofluid

B.J. de Gans, N.J. Duin, Henricus T.M. van den Ende, J. Mellema

Research output: Contribution to journalArticleAcademicpeer-review

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Abstract

The dependence of magnetorheological properties on particle size is studied, using a model magnetorheological fluid consisting of nonmagnetic silica particles suspended in a ferrofluid. For small particles a strong increase of magnetorheological properties with particle size was found. At a certain particle size and field strength a crossover occurs to a regime where there is only a very limited size dependence. This can be understood in terms of the length of the chains in relation to the gap size of the geometry. Crossover occurs when the average chain length becomes comparable to the gap size. The remaining size dependence may be explained by polydispersity, variations in the morphology, variations in the sterically stabilizing layer of the particles and surface roughness of the geometry.
Original languageUndefined
Pages (from-to)2032-2042
Number of pages11
JournalJournal of chemical physics
Volume113
Issue number6
DOIs
Publication statusPublished - 2000

Keywords

  • IR-73592
  • METIS-128970

Cite this

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abstract = "The dependence of magnetorheological properties on particle size is studied, using a model magnetorheological fluid consisting of nonmagnetic silica particles suspended in a ferrofluid. For small particles a strong increase of magnetorheological properties with particle size was found. At a certain particle size and field strength a crossover occurs to a regime where there is only a very limited size dependence. This can be understood in terms of the length of the chains in relation to the gap size of the geometry. Crossover occurs when the average chain length becomes comparable to the gap size. The remaining size dependence may be explained by polydispersity, variations in the morphology, variations in the sterically stabilizing layer of the particles and surface roughness of the geometry.",
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year = "2000",
doi = "10.1063/1.482011",
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journal = "Journal of chemical physics",
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The influence of particle size on the magnetorheological properties of an inverse ferrofluid. / de Gans, B.J.; Duin, N.J.; van den Ende, Henricus T.M.; Mellema, J.

In: Journal of chemical physics, Vol. 113, No. 6, 2000, p. 2032-2042.

Research output: Contribution to journalArticleAcademicpeer-review

TY - JOUR

T1 - The influence of particle size on the magnetorheological properties of an inverse ferrofluid

AU - de Gans, B.J.

AU - Duin, N.J.

AU - van den Ende, Henricus T.M.

AU - Mellema, J.

PY - 2000

Y1 - 2000

N2 - The dependence of magnetorheological properties on particle size is studied, using a model magnetorheological fluid consisting of nonmagnetic silica particles suspended in a ferrofluid. For small particles a strong increase of magnetorheological properties with particle size was found. At a certain particle size and field strength a crossover occurs to a regime where there is only a very limited size dependence. This can be understood in terms of the length of the chains in relation to the gap size of the geometry. Crossover occurs when the average chain length becomes comparable to the gap size. The remaining size dependence may be explained by polydispersity, variations in the morphology, variations in the sterically stabilizing layer of the particles and surface roughness of the geometry.

AB - The dependence of magnetorheological properties on particle size is studied, using a model magnetorheological fluid consisting of nonmagnetic silica particles suspended in a ferrofluid. For small particles a strong increase of magnetorheological properties with particle size was found. At a certain particle size and field strength a crossover occurs to a regime where there is only a very limited size dependence. This can be understood in terms of the length of the chains in relation to the gap size of the geometry. Crossover occurs when the average chain length becomes comparable to the gap size. The remaining size dependence may be explained by polydispersity, variations in the morphology, variations in the sterically stabilizing layer of the particles and surface roughness of the geometry.

KW - IR-73592

KW - METIS-128970

U2 - 10.1063/1.482011

DO - 10.1063/1.482011

M3 - Article

VL - 113

SP - 2032

EP - 2042

JO - Journal of chemical physics

JF - Journal of chemical physics

SN - 0021-9606

IS - 6

ER -