Kinetics of colloidal deposition, assembly, and crystallization in steady electric fields

Soft Matter
Joseph A Ferrar, Michael J Solomon

Abstract

We quantify and model the deposition and crystallization kinetics of initially dilute colloidal spheres due to application of a steady, direct current electric field in the thin gap between parallel electrodes. The system studied is poly(12-hydroxystearic acid) (PHSA)-stabilized poly(methyl methacrylate) (PMMA) spheres dispersed in a mixture of cyclohexylbromide (CHB), decalin, and a low concentration of the partially disassociating salt tetrabutylammonium chloride (TBAC). The temporal and spatial evolution of the colloidal volume fraction in the ∼1 mm gap between the electrodes is quantified under conditions of both deposition and relaxation by confocal laser scanning microscopy (CLSM). During deposition assembly, the spatial dependence of the colloid volume fraction approaches steady state at times between hundreds of minutes at the lowest electric field strength (as characterized by a Peclet number, Pe) and at tens of minutes at higher field strengths. During disassembly, the volume fraction relaxes nearly exponentially. The kinetics are modeled by adapting a treatment for sedimentation (Davis and Russel, Phys. Fluids A, 1989, 1, 82) to the case of steady electric fields. The model's predictions show good agreement with the ...Continue Reading

References

Aug 22, 1988·Physical Review Letters·B J Ackerson, P N Pusey
Jan 25, 2006·Langmuir : the ACS Journal of Surfaces and Colloids·Hiroshi Fudouzi, Tsutomu Sawada
Apr 15, 2006·The Journal of Chemical Physics·Tesfu Solomon, Michael J Solomon
Jun 15, 2007·Journal of Colloid and Interface Science·Deshpremy Mukhija, Michael J Solomon
Sep 4, 2008·Physical Review Letters·Laura T SheredaMichael J Solomon
Aug 12, 2009·Angewandte Chemie·Frank MarlowCecilia Mendive
Dec 3, 2010·Journal of the American Chemical Society·Zhenkun ZhangJan Vermant
Mar 23, 2011·Nature Nanotechnology·Huigang ZhangPaul V Braun
Sep 19, 2012·Proceedings of the National Academy of Sciences of the United States of America·Lilian C HsiaoMichael J Solomon
Apr 25, 2014·Nature Communications·Youngri KimMichael J Solomon
May 8, 2014·Reports on Progress in Physics·Roberto Piazza
Mar 15, 2015·Physical Review. E, Statistical, Nonlinear, and Soft Matter Physics·Damien D Brewer, Satish Kumar

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Citations

Mar 19, 2016·Soft Matter·Ronal A DeLaCruz-AraujoUbaldo M Córdova-Figueroa
Aug 19, 2016·Soft Matter·Bhuvnesh BhartiOrlin D Velev
Jun 28, 2017·Langmuir : the ACS Journal of Surfaces and Colloids·Carlos A Silvera BatistaMichael J Solomon
Sep 16, 2017·Langmuir : the ACS Journal of Surfaces and Colloids·Sarah J BoehmChristine D Keating
Feb 6, 2018·Langmuir : the ACS Journal of Surfaces and Colloids·Michael J Solomon

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