Mixtures of functionalized colloids on substrates

C. S. Dias; N. A. M. Araújo; M. M. Telo da Gama

doi:10.1063/1.4824904

journal article Oct 18, 2013

Mixtures of functionalized colloids on substrates

C. S. Dias

N. A. M. Araújo M. M. Telo da Gama

The Journal of Chemical Physics Vol. 139 No. 15 · AIP Publishing

View at Publisher Save 10.1063/1.4824904

Abstract

Patchy particles are a class of colloids with functionalized surfaces. Through surface functionalization, the strength and directionality of the colloidal interactions are tunable allowing control over coordination of the particle. Exquisite equilibrium phase diagrams of mixtures of coordination two and three have been reported. However, the kinetics of self-organization and the feasibility of the predicted structures are still largely unexplored. Here, we study the irreversible aggregation of these mixtures on a substrate, for different fractions of two-patch particles. Two mechanisms of mass transport are compared: diffusion and advection. In the diffusive case, an optimal fraction is found that maximizes the density of the aggregate. By contrast, for advective transport, the density decreases monotonically with the fraction of two-patch colloids, in line with the behavior of the liquid density on the spinodal of the equilibrium phase diagram.

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Details

Published: Oct 18, 2013
Vol/Issue: 139(15)

Authors

C

C. S. Dias

Universidade de Lisboa 1 Centro de Física Teórica e Computacional, , Avenida Professor Gama Pinto 2, P-1649-003 Lisboa, Portugal

N

N. A. M. Araújo

ETH Zurich 2 Computational Physics for Engineering Materials, IfB, , Wolfgang-Pauli-Strasse 27, CH-8093 Zurich, Switzerland

M

M. M. Telo da Gama

Universidade de Lisboa 1 Centro de Física Teórica e Computacional, , Avenida Professor Gama Pinto 2, P-1649-003 Lisboa, Portugal; Faculdade de Ciências da Universidade de Lisboa 3 Departamento de Física, , P-1749-016 Lisboa, Portugal

Cite This Article

C. S. Dias, N. A. M. Araújo, M. M. Telo da Gama (2013). Mixtures of functionalized colloids on substrates. The Journal of Chemical Physics, 139(15). https://doi.org/10.1063/1.4824904

Mixtures of functionalized colloids on substrates

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