TY - GEN
T1 - Direct numerical simulations of electrophoretic deposition of charged colloidal suspensions
AU - Park, Jae Sung
AU - Saintillanb, David
PY - 2012
Y1 - 2012
N2 - 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.
AB - 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.
KW - Colloidal suspensions
KW - Direct numerical simulations
KW - Electrophoretic deposition
KW - Stokesian dynamics
UR - http://www.scopus.com/inward/record.url?scp=84859055330&partnerID=8YFLogxK
UR - http://www.scopus.com/inward/citedby.url?scp=84859055330&partnerID=8YFLogxK
U2 - 10.4028/www.scientific.net/KEM.507.47
DO - 10.4028/www.scientific.net/KEM.507.47
M3 - Conference contribution
AN - SCOPUS:84859055330
SN - 9783037853795
T3 - Key Engineering Materials
SP - 47
EP - 51
BT - Electrophoretic Deposition
PB - Trans Tech Publications Ltd
T2 - 4th International Conference on Electrophoretic Deposition: Fundamentals and Applications
Y2 - 2 October 2011 through 7 October 2011
ER -