Glass formation and shear elasticity in dense suspensions of repulsive anisotropic particles

Kinetic vitrification, shear elasticity, and the approach to jamming are investigated for repulsive nonspherical colloids and contrasted with their spherical analog. Particle anisotropy dramatically increases the volume fraction for kinetic arrest. The shear modulus of all systems increases roughly...

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Bibliographic Details
Published inPhysical review letters Vol. 105; no. 5; p. 055702
Main Authors Kramb, R C, Zhang, R, Schweizer, K S, Zukoski, C F
Format Journal Article
LanguageEnglish
Published United States 28.07.2010
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Summary:Kinetic vitrification, shear elasticity, and the approach to jamming are investigated for repulsive nonspherical colloids and contrasted with their spherical analog. Particle anisotropy dramatically increases the volume fraction for kinetic arrest. The shear modulus of all systems increases roughly exponentially with volume fraction, and a universal collapse is achieved based on either the dynamic crossover or random close packing volume fraction as the key nondimensionalizing quantity. Quantitative comparisons with recent microscopic theories are performed and good agreement demonstrated.
ISSN:1079-7114
DOI:10.1103/PhysRevLett.105.055702