Investigating the Effect of Alternating Electrophoretic Deposition Parameters on SnO2 Nanoparticles Coating

In this work, the effect of coating parameters such as deposition time, voltage (field intensity), frequency and the liquid medium on deposit mass and deposition quality in alternating field electrophoresis (ACEPD) is investigated. For this purpose, suspensions of SnO2 nanoparticles in pure acetone were prepared. In order to investigate the coating quality (pattern), stereo optical microscopy was used and the coating process was performed on two parallel gold electrodes with a gap of 500 micron. Deposit mass measurements showed that the variation of deposit mass vs. deposition time and voltage follows theoretical relations. On the other hand, the deposit mass decreases at higher frequencies. The deposit pattern in each frequency is allocated to that frequency and does not change over longer deposition times. At last, the deposit mass in pure acetone was much more that the pure ethanol and distilled water due to the higher value for dielectric constant to viscosity ratio of pure acetone. So, it is possible to obtain wide variety of deposition quality by changing the electrophoretic deposition parameters. J. Color Sci. Tech. 4(2010), 175-182© Institute for Color Science and Technology.