AC Electrophoresis, a New Technique for Deposition of Ceramic Nanoparticles; Introduction, Application and Mechanism
| Periodical | Key Engineering Materials (Volume 507) |
|---|---|
| Main Theme | Electrophoretic Deposition: Fundamentals and Applications IV |
| Edited by | A. R. Boccaccini, O. Van der Biest, R. Clasen and J.H. Dickerson |
| Pages | 41-45 |
| DOI | 10.4028/www.scientific.net/KEM.507.41 |
| Citation | Reza Riahifar et al., 2012, Key Engineering Materials, 507, 41 |
| Online since | March, 2012 |
| Authors | Reza Riahifar, Babak Raissi, Ehsan Marzbanrad, Cyrus Zamani |
| Keywords | AC Electric Field, AC-Electroosmosis, Ceramic Nanoparticle, Dielectrophoresis, Electrophoretic Deposition (EPD) |
| Price | US$ 28,- |
Deposition of ceramic nanoparticles (dispersed in non-aqueous suspension) on in-plane electrodes and under the influence of AC electric fields in the frequency range of 0.01 Hz - 10 kHz is investigated. Analysis of the particle response to the applied field is a difficult task due to the mutual effect of electric and hydrodynamic forces which are present in the system. In this work, however, we show the possibility of dividing the frequency range into four domains with four distinct governing mechanisms. Possible mechanisms are suggested and dominant forces are determined for each domain. In situ optical microscopy observations are used for visualization of nanoparticles´ movement dispersed in liquid medium. These observations show that applying AC electrophoresis at frequencies below 10 kHz is an effective way for manipulating ceramic nanoparticles and device fabrication.
