نوع مقاله : مقاله کامل پژوهشی
موضوعات
عنوان مقاله English
نویسندگان English
In this study, a particle-based model incorporating all inter-particle interactions was employed to simulate the electrophoretic deposition process. This model was also used to investigate the effect of the surface (zeta) potential of particles on the structure and configuration of particles in the deposited layer at the mesoscale. Simulations were then performed with four different values of zeta potential of particles {-5, -25, -50, -100} mV, the results of which showed that zeta potential as an important factor in determining the interaction between particles had an impact on the deposit structure and packing. Upon increasing the zeta potential up to 50 mV, the degree of order increased while the thickness and density of the deposited layer slightly decreased. Increasing the electrostatic repulsion made depositing particles push into the ordered sites in the deposited layer. Due to the high particle repulsion that prevents particles from approaching each other at the zeta potential of 100 mV, incorporation of the particles in the ordered locations decreased again. The findings of this study along with application of the proposed model can help tune the structure and packing of the resulting deposit by varying the zeta potential of particles.
کلیدواژهها English