Pair diffusion in quasi-one- and quasi-two-dimensional binary colloid suspensions

David T. Valley; Smart A. Rice; Bianxiao Cui; Hau My Ho; Haim Diamant; Binhua Lin

doi:10.1063/1.2719191

Pair diffusion in quasi-one- and quasi-two-dimensional binary colloid suspensions

David T. Valley, Smart A. Rice, Bianxiao Cui, Hau My Ho, Haim Diamant, Binhua Lin

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Abstract

The authors report the results of measurements of the center of mass and relative pair diffusion coefficients in quasi-one-dimensional (q1D) and quasi-two-dimensional (q2D) binary colloid suspensions. The new results extend the findings of similar studies of one-component quasi-one-dimensional and quasi-two-dimensional colloid suspensions. Our principal new finding is that the presence of the smaller diameter component can destroy the oscillatory structure of the separation dependence of the q2D relative pair diffusion coefficient of the large particles even though the oscillatory character of the large particle equilibrium pair correlation function remains prominent, and that no such effect occurs with the q1D suspension. An interpretation of these results is proposed.

Original language	English (US)
Article number	134908
Journal	Journal of Chemical Physics
Volume	126
Issue number	13
DOIs	https://doi.org/10.1063/1.2719191
State	Published - 2007
Externally published	Yes

Bibliographical note

Funding Information:
The research reported in this paper has been supported by the National Science Foundation (CTS-021174 and CHE-9977841), the Israel Science Foundation (77/03), the NSF-funded MRSEC laboratory at The University of Chicago, and by a Senior Mentor Grant to S.A.R. from the Dreyfus Foundation.

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abstract = "The authors report the results of measurements of the center of mass and relative pair diffusion coefficients in quasi-one-dimensional (q1D) and quasi-two-dimensional (q2D) binary colloid suspensions. The new results extend the findings of similar studies of one-component quasi-one-dimensional and quasi-two-dimensional colloid suspensions. Our principal new finding is that the presence of the smaller diameter component can destroy the oscillatory structure of the separation dependence of the q2D relative pair diffusion coefficient of the large particles even though the oscillatory character of the large particle equilibrium pair correlation function remains prominent, and that no such effect occurs with the q1D suspension. An interpretation of these results is proposed.",

author = "Valley, {David T.} and Rice, {Smart A.} and Bianxiao Cui and Ho, {Hau My} and Haim Diamant and Binhua Lin",

note = "Funding Information: The research reported in this paper has been supported by the National Science Foundation (CTS-021174 and CHE-9977841), the Israel Science Foundation (77/03), the NSF-funded MRSEC laboratory at The University of Chicago, and by a Senior Mentor Grant to S.A.R. from the Dreyfus Foundation.",

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AU - Valley, David T.

AU - Rice, Smart A.

AU - Cui, Bianxiao

AU - Ho, Hau My

AU - Diamant, Haim

AU - Lin, Binhua

N1 - Funding Information: The research reported in this paper has been supported by the National Science Foundation (CTS-021174 and CHE-9977841), the Israel Science Foundation (77/03), the NSF-funded MRSEC laboratory at The University of Chicago, and by a Senior Mentor Grant to S.A.R. from the Dreyfus Foundation.

PY - 2007

Y1 - 2007

N2 - The authors report the results of measurements of the center of mass and relative pair diffusion coefficients in quasi-one-dimensional (q1D) and quasi-two-dimensional (q2D) binary colloid suspensions. The new results extend the findings of similar studies of one-component quasi-one-dimensional and quasi-two-dimensional colloid suspensions. Our principal new finding is that the presence of the smaller diameter component can destroy the oscillatory structure of the separation dependence of the q2D relative pair diffusion coefficient of the large particles even though the oscillatory character of the large particle equilibrium pair correlation function remains prominent, and that no such effect occurs with the q1D suspension. An interpretation of these results is proposed.

AB - The authors report the results of measurements of the center of mass and relative pair diffusion coefficients in quasi-one-dimensional (q1D) and quasi-two-dimensional (q2D) binary colloid suspensions. The new results extend the findings of similar studies of one-component quasi-one-dimensional and quasi-two-dimensional colloid suspensions. Our principal new finding is that the presence of the smaller diameter component can destroy the oscillatory structure of the separation dependence of the q2D relative pair diffusion coefficient of the large particles even though the oscillatory character of the large particle equilibrium pair correlation function remains prominent, and that no such effect occurs with the q1D suspension. An interpretation of these results is proposed.

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Pair diffusion in quasi-one- and quasi-two-dimensional binary colloid suspensions

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