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231224s2012 xx |||||o 00| ||eng c |
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|a 10.1021/la302010e
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|a eng
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| 100 |
1 |
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|a Heinson, William R
|e verfasserin
|4 aut
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| 245 |
1 |
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|a Shear history independence in colloidal aggregation
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|c 2012
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|a Text
|b txt
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|a ƒaComputermedien
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|a Date Completed 07.12.2012
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|a Date Revised 07.08.2012
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|a published: Print-Electronic
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|a Citation Status PubMed-not-MEDLINE
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|a Stimulated by experiments, we have carried out detailed simulations of aggregation in the presence of shear in a model colloidal system with a short-range attractive potential. For weak shear rates, we find that the shear enhanced the aggregation and that the long-time state of the system is independent of the shear history. For strong shear rates, precipitous fragmentation occurred after the shear was turned on and, after an induction period, the aggregation quickly rebounded in a stochastic manner similar to classical nucleation phenomena. However, the long-time state of the system is, once again, independent of the shear history. Thus, for both weak and strong shear cases, the shear rate acts as a state variable of the aggregating system. Shear rates employed in the simulations can be attained in laboratory experiments, as confirmed by computing the dimensionless Péclet numbers
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|a Journal Article
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|a Sorensen, Christopher M
|e verfasserin
|4 aut
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|a Chakrabarti, Amitabha
|e verfasserin
|4 aut
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| 773 |
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|i Enthalten in
|t Langmuir : the ACS journal of surfaces and colloids
|d 1992
|g 28(2012), 31 vom: 07. Aug., Seite 11337-42
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|g volume:28
|g year:2012
|g number:31
|g day:07
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|g pages:11337-42
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