Direct imaging of dynamical heterogeneities near the colloid-gel transition.

Direct imaging of dynamical heterogeneities near the colloid-gel transition. Research Abstract Details 

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Direct imaging of dynamical heterogeneities near the colloid-gel transition. Abstract Text:

Y Gao,M L Kilfoil,Y Gao,M L Kilfoil,

We observe the microscopic dynamics of a suspension of colloids with attractive interaction by confocal fluorescence microscopy to provide a deeper understanding of the relationship between local structure and dynamics near the gel transition. We study the distinct and self-parts of the van Hove density-density correlation function applied to our experimental data. Separable fast and slow populations emerge in the self-part, while the distinct part shows a pronounced signature of dynamic heterogeneities close to the gel transition, dominated by the fast particles. The slow population close to the gel transition shares features with an attraction-driven colloidal glass, including a plateau in the mean squared displacement that provides an estimate for the dynamical localization length.

Direct imaging of dynamical heterogeneities near the colloid-gel transition. Publishing Authors By Initials

Y Gao,ML Kilfoil,Y Gao,ML Kilfoil,

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Direct imaging of dynamical heterogeneities near the colloid-gel transition. Journal Published:

PUBLICATION TYPE: Journal Article

Journal: Physical review letters

VOLUME: 99

Page Numbers: 078301

Journal Abbreviation: Phys. Rev. Lett.

ISSN: 0031-9007

DAY: 15

MONTH: 08

YEAR: 2007

Direct imaging of dynamical heterogeneities near the colloid-gel transition. Information

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LANGUAGE: eng

NlmUniqueID: 401141

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Grant and Affiliation Information for Direct imaging of dynamical heterogeneities near the colloid-gel transition.

AFFILIATION: Department of Physics, McGill University, Montréal, Canada H3A 2T8.

Country: United States

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MEDLINETA: Phys Rev Lett

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