Effect of dielectrophoretic force in the self-assembly process of electrosprayed nanoparticles

View/Open
Cita com:
hdl:2117/119584
Document typeArticle
Defense date2017-03-31
Rights accessOpen Access
Abstract
In this work the effect of the dielectrophoretic force (DEP) in the self-assembly process of nanoparticles electrosprayed onto a substrate, is examined. DEP force is originated by the electric field created by the electrospray gun and by the distortion of the field created by the effective dipole of each nanoparticle. It is also shown that the modulus of this force is large when the distance between particles is few times its diameter, provided the medium is wet and the electric field is not switched off.
The directional nature of DEP In this wet phase, is shown to chain nanoparticles aligned with the main electric field direction. Although there is a repulsive force between chains in the orthogonal direction to the field, it is minimum when the beads align with the voids in the nearby chains.
DEP is a dominant force in the close distances of nanoparticles compared to double layer, van der Waals, electrophoretic retardation, weight and buoyancy.
CitationCastañer, L., Bermejo, S., Dominguez, M. Effect of dielectrophoretic force in the self-assembly process of electrosprayed nanoparticles. "Journal of electrostatics", 31 Març 2017, vol. 87, p. 257-262.
ISSN0304-3886
Publisher versionhttp://www.sciencedirect.com/science/article/pii/S0304388617300189
Files | Description | Size | Format | View |
---|---|---|---|---|
papertex2.pdf | 660,2Kb | View/Open |
All rights reserved. This work is protected by the corresponding intellectual and industrial
property rights. Without prejudice to any existing legal exemptions, reproduction, distribution, public
communication or transformation of this work are prohibited without permission of the copyright holder