Personal homepage of Antonio RAMOS REYES
Español/English
Current position:
Associate Professor of Electromagnetism in the
Department of Electronics and Electromagnetism, Faculty of Physics,
University of Seville.
Co-responsible for the direction of research
Electrohydrodynamics and
electrokinetics of suspensions and colloids in the
group of Electrohydrodynamics and Cohesive Granular Media.
Title:
PhD in Physics, 1993, University of Seville.
PhD thesis: Equilibrium shapes and bifurcation diagrams
of liquid bridges and drops in the presence of electric fields.
Director:
Antonio Castellanos Mata
Keywords:
ac electroosmosis, dielectrophoresis, electrothermal flow, microsystems, microelectrodes, micropumps, microfluidics, Taylor's cone, electrohydrodynamics, equilibrium shapes, liquid bridge,
fine powders, cohesivity, flowability, fluidized bed
Directions of research in a few words:
Main scientific results:
- Description of new kinds of fluid flows induced by ac electric fields in microsystems (ac electroosmosis and electrothermal flows), and their influence in dielectrophoresis
- New types of cone solutions for liquid-liquid interfaces subjected to electric fields are described; the classical Taylor cone solution for conducting liquids is extended to dielectric liquids
-
Experimental and numerical determination of the critical electric field needed to hold a dielectric liquid bridge of given slenderness and volume
-
Theoretical explanation and experimental measurement of the
electric-field-induced fluid flow in microsystems named "ac electroosmosis"
-
Description of an apparatus based on a novel use of a powder bed for measuring different properties of fine cohesive powders
Main scientific publications:
-
A. Ramos, H. Morgan, N.G. Green & A. Castellanos.
AC electrokinetics: A review of forces in microelectrode structures.
J. Phys. D: Appl. Phys., vol. 31, 2338--2353 (1998)
-
A. Ramos & A. Castellanos. Conical points in liquid-liquid interfaces subjected to electric fields. Phys. Letters A, vol. 184, 268-272 (1994)
-
A. Ramos, H. González & A. Castellanos. Experiments on dielectric liquid bridges subjected to electric fields. Phys. Fluids, vol. 6, 3206-3208 (1994)
-
N.G. Green, A. Ramos, A. González, H. Morgan & A. Castellanos. Fluid flow induced by non-uniform AC electric fields in electrolytes on microelectrodes. III. Observation of stream-lines and numerical simulation.
Phys. Rev. E, vol. 66, 026305 (2002)
-
J.M. Valverde, A. Castellanos, A. Ramos, A.T. Pérez, M.A. Morgan & P.K. Watson. An automated apparatus for measuring the tensile strength and compressibility of fine cohesive powders.
Rev. Scientific Instruments, vol. 71, 2791-2795 (2000)
PhD Thesis (Direction)
All my publications and current projects
you may find here
If you are interested in any of my papers, please ask me by
e-mail, and I will be happy to send you the reprints.
Contact:
-
Mail address:
Dpto. de Electrónica y Electromagnetismo,
Universidad de Sevilla, Avenida Reina Mercedes s/n,
41012, Sevilla, Spain
-
Phone:
+34 954 556 410
-
Fax:
+34 954 239 434
-
E-mail:
If you have questions or comments please write to
Last update: November, 2006