Direct numerical simulations of electrophoretic deposition of charged colloidal suspensions

Jae Sung Park, David Saintillanb

Research output: Chapter in Book/Report/Conference proceedingConference contribution

4 Scopus citations

Abstract

Motivated by applications in the field of nanomanufacturing, we perform large-scale numerical simulations of the electrophoretic deposition of suspensions of charged colloids in an electrolyte. A simulation method is developed to model the full deposition process that captures linear electrophoresis, dipolar interactions, van-der-Waals forces, steric interactions, Brownian motion, as well as electric and hydrodynamic interactions with the electrodes. Using a fast algorithm, suspensions of up to 5,000 particles are simulated, and results are reported for the final deposit microstructure as a function of field strength. The simulation results demonstrate that regular crystalline colloidal assemblies are obtained at low field strengths and volume fractions, while more random structures with frequent defects are formed in stronger fields and at higher volume fractions, in agreement with recent deposition experiments.

Original languageEnglish (US)
Title of host publicationElectrophoretic Deposition
Subtitle of host publicationFundamentals and Applications IV
PublisherTrans Tech Publications Ltd
Pages47-51
Number of pages5
ISBN (Print)9783037853795
DOIs
StatePublished - Jan 1 2012
Event4th International Conference on Electrophoretic Deposition: Fundamentals and Applications - Puerto Vallarta, Mexico
Duration: Oct 2 2011Oct 7 2011

Publication series

NameKey Engineering Materials
Volume507
ISSN (Print)1013-9826
ISSN (Electronic)1662-9795

Other

Other4th International Conference on Electrophoretic Deposition: Fundamentals and Applications
CountryMexico
CityPuerto Vallarta
Period10/2/1110/7/11

Keywords

  • Colloidal suspensions
  • Direct numerical simulations
  • Electrophoretic deposition
  • Stokesian dynamics

ASJC Scopus subject areas

  • Materials Science(all)
  • Mechanics of Materials
  • Mechanical Engineering

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  • Cite this

    Park, J. S., & Saintillanb, D. (2012). Direct numerical simulations of electrophoretic deposition of charged colloidal suspensions. In Electrophoretic Deposition: Fundamentals and Applications IV (pp. 47-51). (Key Engineering Materials; Vol. 507). Trans Tech Publications Ltd. https://doi.org/10.4028/www.scientific.net/KEM.507.47