When like charges attract: The effects of geometrical confinement on long-range colloidal interactions

John C. Crocker; David G. Grier

doi:10.1103/PhysRevLett.77.1897

When like charges attract: The effects of geometrical confinement on long-range colloidal interactions

John C. Crocker, David G. Grier

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

Abstract

High-resolution measurements of the interaction potential between pairs of charged colloidal microspheres suspended in water provide stringent tests for theories of colloidal interactions. The screened Coulomb repulsions we observe for isolated spheres agree quantitatively with predictions of the Derjaguin-Landau-Verwey-Overbeek (DLVO) theory. Confining the same spheres between charged glass walls, however, induces a strong long-range attractive interaction which is not accounted for by the DLVO theory.

Original language	English (US)
Pages (from-to)	1897-1900
Number of pages	4
Journal	Physical Review Letters
Volume	77
Issue number	9
DOIs	https://doi.org/10.1103/PhysRevLett.77.1897
State	Published - 1996

ASJC Scopus subject areas

General Physics and Astronomy

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10.1103/PhysRevLett.77.1897

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abstract = "High-resolution measurements of the interaction potential between pairs of charged colloidal microspheres suspended in water provide stringent tests for theories of colloidal interactions. The screened Coulomb repulsions we observe for isolated spheres agree quantitatively with predictions of the Derjaguin-Landau-Verwey-Overbeek (DLVO) theory. Confining the same spheres between charged glass walls, however, induces a strong long-range attractive interaction which is not accounted for by the DLVO theory.",

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When like charges attract: The effects of geometrical confinement on long-range colloidal interactions

Abstract

ASJC Scopus subject areas

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