Gravitational Stability of Suspensions of Attractive Colloidal Particles | Zendy

Chan-Joong Kim | Zendy; Yaqian Liu | Zendy; Angelika Kühnle | Zendy; Stephan Hess | Zendy; Sonja Viereck | Zendy; Thomas Danner | Zendy; L. Mahadevan | Zendy; David A. Weitz | Zendy

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Gravitational Stability of Suspensions of Attractive Colloidal Particles

Author(s) -

Chan-Joong Kim,

Yaqian Liu,

Angelika Kühnle,

Stephan Hess,

Sonja Viereck,

Thomas Danner,

L. Mahadevan,

David A. Weitz

Publication year - 2007

Publication title -

physical review letters

Language(s) - English

Resource type - Journals

SCImago Journal Rank - 3.688

H-Index - 673

eISSN - 1079-7114

pISSN - 0031-9007

DOI - 10.1103/physrevlett.99.028303

Subject(s) - colloid , suspension (topology) , attraction , modulus , gravitation , particle (ecology) , stability (learning theory) , phase (matter) , emulsion , materials science , physics , chemical physics , mechanics , composite material , chemical engineering , classical mechanics , linguistics , philosophy , mathematics , oceanography , quantum mechanics , homotopy , machine learning , computer science , pure mathematics , engineering , geology

Colloidal suspensions are susceptible to gravitationally induced phase separation. This can be mitigated by the formation of a particle network caused by depletion attraction. The effectiveness of this network in supporting the buoyant weight of the suspension can be characterized by its compressional modulus. We measure the compressional modulus for emulsion networks induced by depletion attraction and present a model that quantitatively predicts their gravitational stability. We also determine the relationship between the strength of the depletion attraction and the magnitude of the compressional modulus.

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