Por motivos de mantenimiento se ha deshabilitado el inicio de sesión temporalmente. Rogamos disculpen las molestias.
NameRamos Reyes, Antonio
DepartmentElectrónica y Electromagnetismo
Knowledge areaElectromagnetismo
Professional categoryCatedrático de Universidad
E-mailRequest
           
  • No. publications

    42

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Concentration-polarization electroosmosis for particle fractionation

Fernández Mateo, Raúl; García Sánchez, Pablo; Ramos Reyes, Antonio; Morgan, Hywel (Royal Society of Chemistry, 2024)
Concentration-polarization electroosmosis (CPEO) refers to steady-state electroosmotic flows around charged dielectric ...
Final Degree Project
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Problemas avanzados en electrodinámica: movimiento de partículas

Rodríguez Galán, Andrés; Pérez Izquierdo, Alberto Tomás; Ramos Reyes, Antonio (2023)
Desde la electrónica hasta la producción de rayos X o las auroras boreales, las fuerzas electromagnéticas y los movimientos ...
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Wall Repulsion during Electrophoresis: Testing the Theory of Concentration-Polarization Electroosmosis

Fernández Mateo, Raúl; Morgan, Hywel; Ramos Reyes, Antonio; García Sánchez, Pablo (AIP Publishing, 2023)
We experimentally study the repulsion of charged microscopic particles with the channel walls during electrophoresis in ...
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Scattering of Metal Colloids by a Circular Post under Electric Fields

Flores-Mena, José Eladio; García Sánchez, Pablo; Ramos Reyes, Antonio (MDPI, 2023)
We consider the scattering of metal colloids in aqueous solutions by an insulating circular post under the action of an ...
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Low-frequency electrokinetics in a periodic pillar array for particle separation

Calero Martín, Víctor; Fernández Mateo, Raúl; Morgan, Hywel; García Sánchez, Pablo; Ramos Reyes, Antonio (Elsevier, 2023)
Deterministic Lateral Displacement (DLD) exploits periodic arrays of pillars inside microfluidic channels for high-precision ...
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Dynamics of Fixed-volume Pinned Films - Dealing with a Non-self-adjoint Thin-film Problem

Gabay, Israel; Bacheva, Vesna; Ilssar, Dotan; Bercovici, Moran; Ramos Reyes, Antonio; Gat, Amir (Cambridge University Press, 2023)
The use of thin liquid films has expanded beyond lubrication and coatings, and into applications in actuators and adaptive ...
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Particle Finder: a Simple Particle Detection Tool for Continuous-flow Systems

Fernández Mateo, Raúl; Calero, Víctor; García Sánchez, Pablo; Ramos Reyes, Antonio; Morgan, Hywel (Springer Nature, 2023)
We describe a user-friendly, open source software for single-particle detection/counting in a continuous-flow. The tool ...
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Insulating Traveling-wave Electrophoresis

Fernández Mateo, Raúl; Calero Martín, Víctor; Morgan, Hywel; García Sánchez, Pablo; Ramos Reyes, Antonio (American Physical Society, 2023)
Traveling-wave electrophoresis (TWE) is a method for transporting charged colloidal particles used in many microfluidic ...
Article
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Wall Repulsion of Charged Colloidal Particles during Electrophoresis in Microfluidic Channels

Fernández Mateo, Raúl; Calero, Víctor; Morgan, Hywel; García Sánchez, Pablo; Ramos Reyes, Antonio (American Physical Society, 2022)
Electrophoresis describes the motion of charged particles suspended in electrolytes when subjected to an external electric ...
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Shaping liquid films by dielectrophoresis

Gabay, Israel; Paratore, Federico; Boyko, Evgeniy; Ramos Reyes, Antonio; Gat, Amir D.; Bercovici, Moran (Cambridge University Press, 2021)
We present a theoretical model and experimental demonstration of thin liquid film deformations due to a dielectric force ...
Article
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Stationary Electro-osmotic Flow Driven by ac Fields around Insulators

Calero, Víctor; Fernández Mateo, Raúl; Morgan, Hywel; García Sánchez, Pablo; Ramos Reyes, Antonio (American Physical Society, 2021)
Electric fields are commonly used for manipulating particles and liquids in microfluidic systems. In this work, we report ...
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Continuous particle separation in microfluidics: Deterministic lateral displacement assisted by electric fields

García Sánchez, Pablo; Ramos Reyes, Antonio (Multidisciplinary Digital Publishing Institute (MDPI), 2021)
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Concentration-polarization electroosmosis near insulating constrictions within microfluidic channels

Fernández Mateo, Raúl; Calero Martín, Víctor; Morgan, Hywel; Ramos Reyes, Antonio; García Sánchez, Pablo (American Chemical Society, 2021)
Electric fields are commonly used to trap and separate micro- and nanoparticles near channel constrictions in microfluidic ...
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Short communication: A simple and accurate method of measuring the zeta-potential of microfluidic channels

Fernández Mateo, Raúl; García Sánchez, Pablo; Calero Martín, Víctor; Ramos Reyes, Antonio; Morgan, Hywel (Wiley-Blackwell, 2021)
We describe an improved method for determining the electroosmotic mobility and zeta potential of surfaces based on a ...
Article
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Stationary electro-osmotic flow driven by AC fields around charged dielectric spheres

Fernández Mateo, Raúl; García Sánchez, Pablo; Calero Martín, Víctor; Morgan, Hywel; Ramos Reyes, Antonio (Cambridge University Press, 2021)
We experimentally demonstrate quadrupolar electro-osmotic flows around charged dielectric microspheres immersed in an ...
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Dielectrophoretic Force Equilibrium of Complex Particles

Elkeles, T.; García Sánchez, Pablo; Yue, W.; Ramos Reyes, Antonio; Yossifon, G. (American Physical Society, 2020)
In contrast to the commonly used spherical Janus particles, here we use engineered Janus particles that are fabricated by ...
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Dipolophoresis and Travelling-Wave Dipolophoresis of Metal Microparticles

Flores Mena, Jose Eladio; García Sánchez, Pablo; Ramos Reyes, Antonio (MDPI, 2020)
We study theoretically and numerically the electrokinetic behavior of metal microparticles immersed in aqueous electrolytes. ...
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Electrokinetic Biased Deterministic Lateral Displacement: Scaling Analysis and Simulations

Calero, Victor; García Sánchez, Pablo; Ramos Reyes, Antonio; Morgan, Hywel (Elsevier, 2020)
Deterministic Lateral Displacement (DLD) is a microfluidic technique where arrays of micropillars within a microchannel ...
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Controllable production of Janus ligaments by AC fields in a flow‑focusing junction

Castro Hernández, Elena De; García Sánchez, Pablo; León Rodríguez, Marta; Fernández Rivas, David; Ramos Reyes, Antonio (Springer, 2019)
We report the production of bicomponent Janus filaments of miscible aqueous fluids in a microfluidic electro-flow-focusing device ...
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Combining DC and AC electric fields with deterministic lateral displacement for micro- And nano-particle separation

Calero, Víctor; García Sánchez, Pablo; Ramos Reyes, Antonio; Morgan, Hywel (American Institute of Physics, 2019)
This paper describes the behavior of particles in a deterministic lateral displacement (DLD) separation device with DC and ...
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Editorial for the Special Issue on AC Electrokinetics in Microfluidic Devices

Ramos Reyes, Antonio; García Sánchez, Pablo (MDPI, 2019)
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Electrorotation of semiconducting microspheres

Rodríguez Sánchez, Laida; Ramos Reyes, Antonio; García Sánchez, Pablo (American Physical Society, 2019)
We study experimentally the electrorotation (ROT) of semiconducting microspheres. ZnO microspheres obtained by a hydrothermal ...
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AC electrokinetic biased deterministic lateral displacement for tunable particle separation

Calero, Víctor; García Sánchez, Pablo; Honrado, Carlos; Ramos Reyes, Antonio; Morgan, Hywel (Royal Society of Chemistry, 2019)
We describe a novel particle separation technique that combines deterministic lateral displacement (DLD) with orthogonal ...
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Modeling the AC Electrokinetic Behavior of Semiconducting Spheres

García Sánchez, Pablo; Flores Mena, Jose Eladio; Ramos Reyes, Antonio (MDPI, 2019)
We study theoretically the dielectrophoresis and electrorotation of a semiconducting microsphere immersed in an aqueous ...
Presentation
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Antonio Castellanos: a great scientist and a great man

Pontiga Romero, Francisco de Paula; Ramos Reyes, Antonio; Grekova, Elena F. (Universidad de Sevilla, 2018)
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Droplet group production in an AC electro- flow focusing microdevice

Castro Hernández, Elena De; García Sánchez, Pablo; Velencoso Gómez, Alfonso; Silas Jurado, Antonio; Fernández Rivas, David; Ramos Reyes, Antonio (Springer, 2017)
We report the production of droplet groups with a controlled number of drops in a microfluidic electro-flow focusing device ...
PhD Thesis
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Manipulación eléctrica de micropartículas y nanopartículas metálicas inmersas en soluciones electrolíticas

Arcenegui Troya, Juan Jesús; Ramos Reyes, Antonio; García Sánchez, Pablo (2016)
En el presente documento se muestran los resultados obtenidos a lo largo de cuatro años de trabajo en una línea de ...
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AC electrified jets in a flow-focusing device: Jet length scaling

Castro Hernández, Elena De; García Sánchez, Pablo; Alzaga Gimeno, Javier; Tan, Say Hwa; Baret, Jean Christophe; Ramos Reyes, Antonio (AIP Publishing, 2016)
We use a microfluidic flow-focusing device with integrated electrodes for controlling the production of water-in-oil drops. ...
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Breakup length of AC electrified jets in a microfluidic flow‑focusing junction

Castro Hernández, Elena De; García Sánchez, Pablo; Tan, Say Hwa; Gañán-Calvo, Alfonso M.; Baret, Jean-Christophe; Ramos Reyes, Antonio (Springer, 2015)
Electroactuation of liquid-liquid interfaces offers promising methods to actively modulate droplet formation in droplet-based ...
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Numerical study of dc-biased ac-electrokinetic flow over symmetrical electrodes

Yang Ng, Wee; Ramos Reyes, Antonio; Cheong Lam, Yee; Rodríguez Fernández, Isabel (AIP Publishing, 2012)
This paper presents a numerical study of DC-biased AC-electrokinetic (DC-biased ACEK) flow over a pair of symmetrical ...
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Microwave-induced water flow in a microchannel built on a coplanar waveguide

Khayari, A.; Medrano, M.; Verlage, E.; Velázquez Ahumada, María del Castillo; Freire Rosales, Manuel José; Ramos Reyes, Antonio (AIP Publishing, 2011)
We present experimental and numerical investigations of water flow in a microsystem induced by microwave electric fields. ...
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Experiments on pumping of liquids using arrays of microelectrodes subjected to travelling wave potentials

García Sánchez, Pablo; Ramos Reyes, Antonio; Green, Nicolas G.; Morgan, Hywel (IOP Publishing Ltd., 2008)
Net fluid flow of electrolytes driven on an array of microelectrodes subjected to a travelling-wave potential is presented. ...
PhD Thesis
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Flujos de electrolitos generados por microelectrodos sometidos a una onda de potencial viajera (Travelling-wave electrokinetic micropumps)

García Sánchez, Pablo; Ramos Reyes, Antonio (2008)
La presente tesis doctoral trata sobre el uso de hileras de electrodos (electrode arrays) para el bombeo de electrolitos ...
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Pumping of liquids with traveling-wave electroosmosis

Ramos Reyes, Antonio; Morgan, Hywel; Green, Nicolas G.; González, A.; Castellanos Mata, Antonio (AIP Publishing, 2005)
Net flow of electrolyte induced by a traveling-wave electric potential applied to an array of microelectrodes is reported. ...
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Avalanches in fine, cohesive powders

Valverde Millán, José Manuel; Castellanos Mata, Antonio; Ramos Reyes, Antonio; Watson, P. Keith (American Physical Society, 2000)
We have investigated the onset of avalanches in fine, cohesive granular materials. In our experiments shear stress is ...
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An automated apparatus for measuring the tensile strength and compressibility of fine cohesive powders

Valverde Millán, José Manuel; Castellanos Mata, Antonio; Ramos Reyes, Antonio; Pérez Izquierdo, Alberto Tomás; Morgan, Michael A.; Watson, P. Keith (American Institute of Physics, 2000)
This paper describes an apparatus based on a novel use of a powder bed, whereby the relationship between consolidation ...
Patent
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Dispositivo y procedimiento para medir la cohesión de medios granulares finos.

Castellanos Mata, Antonio; Ramos Reyes, Antonio; Valverde Millán, José Manuel (Oficina Española de Patentes y Marcas , 1999)
Dispositivo y procedimiento para medir la cohesión de medios granulares finos. El objeto de la presente invención es un ...
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On the breakup of slender liquid bridges: Experiments and a 1-D numerical analysis

Ramos Reyes, Antonio; García García, Francisco Javier; Valverde Millán, José Manuel (ScienceDirect, 1999)
Slender axisymmetric dielectric liquid bridges are made stable by the action of an axial electric field. In this paper, ...
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Flow Regimes in Fine Cohesive Powders

Castellanos Mata, Antonio; Valverde Millán, José Manuel; Pérez Izquierdo, Alberto Tomás; Ramos Reyes, Antonio; Watson, P. Keith (American Physical Society, 1999)
Granular materials exhibit several regimes of behavior: plastic, inertial, fluidized, and entrained flow, but not all ...
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Stability of insulating viscous jets under axial electric fields

García García, Francisco Javier; González García, Heliodoro; Ramos Reyes, Antonio; Castellanos Mata, Antonio (ScienceDirect, 1997)
The stability spectrum for a jet of perfectly insulating, viscous liquid subjected to a longitudinal electric field is ...
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The charged bouncing ball: An experimental model for period-doubling bifurcation

Soria del Hoyo, Carlos; Ramos Reyes, Antonio; Pérez Izquierdo, Alberto Tomás (IOP Publishing Ltd., 1997)
This paper presents an experimental and theoretical study of the dynamics of a conducting ball in a poorly conducting ...
PhD Thesis