A5091006142- Characterization and Applications of Magnetic Nanoparticles
- Material Dynamics and Properties
- Rheology and Fluid Dynamics Studies
- Theoretical and Computational Physics
- Nonlinear Dynamics and Pattern Formation
- Surfactants and Colloidal Systems
- Vibration Control and Rheological Fluids
- Enhanced Oil Recovery Techniques
- Geomagnetism and Paleomagnetism Studies
- Social Sciences and Policies
- Chaos control and synchronization
- Surface Modification and Superhydrophobicity
- Electrowetting and Microfluidic Technologies
- Quantum chaos and dynamical systems
- Blood properties and coagulation
- Magnetic and Electromagnetic Effects
- Religious and Theological Studies
- Electrohydrodynamics and Fluid Dynamics
- Fluid Dynamics and Turbulent Flows
- Microfluidic and Bio-sensing Technologies
- Force Microscopy Techniques and Applications
- Spectroscopy and Quantum Chemical Studies
- Latin American Literature Studies
- Pickering emulsions and particle stabilization
- Near-Field Optical Microscopy
National University of Distance Education
2012-2024
Instituto de Física Fundamental
1987-2020
Hospital de Sant Pau
2015-2017
Universitat Autònoma de Barcelona
2017
Distance State University
2011
National Institute of Anthropology and History
2009
Yangon University Of Distance Education
2006
Universidad Complutense de Madrid
2006
Hospital Clínico San Carlos
2000
University of Cambridge
1995
Wetting immiscible displacement of one fluid by another in a porous medium yields self-affine (anisotropic) fractal interfaces between the two fluids. Water-air are characterized experimentally scale-dependent roughness w(L)=${\mathrm{AL}}^{\ensuremath{\beta}}$, with \ensuremath{\beta}=0.73\ifmmode\pm\else\textpm\fi{}0.03, independent capillary number Ca, and A\ensuremath{\propto}${\mathrm{Ca}}^{\mathrm{\ensuremath{-}}0.47\ifmmode\pm\else\textpm\fi{}0.06}$. The exponent \ensuremath{\beta} is...
The first experimental observation is reported of type-III Pomeau-Manneville intermittencies in a hydrodynamical system: the Rayleigh-B\'enard instability studied confined geometry. From optical measurements, return maps have been constructed and distribution laminar period lengths has measured. These results are complete agreement with theoretical model.
The spatiotemporal evolution of field-induced structures in very dilute polarizable colloidal suspensions subject to rotating magnetic fields has been experimentally studied using video microscopy. We found that there is a crossover Mason number (ratio viscous forces) above which the rotation field prevents particle aggregation form chains. Therefore, at these high numbers, more isotropic clusters and isolated particles appear. same behavior was also recent scattering dichroism experiments...
We report on the orientation dynamics and aggregation processes of magnetorheological fluids subject to rotating magnetic fields using technique scattering dichroism. In presence stationary we find that mean length field-induced aggregates reaches a saturation value due finite-size effects. When field is imposed, see chains rotate with frequency (synchronous regime) but retarded phase angle for all rotational frequencies applied. However, two different behaviors are found below or above...
We present experimental results on the aggregation dynamics of a magnetorheological fluid, namely, an aqueous suspension micrometer-sized superparamagnetic particles, under action constant uniaxial magnetic field using video microscopy and image analysis. find scaling behavior in several variables describing kinetics. The data agree well with Family-Vicsek ansatz for diffusion-limited cluster-cluster aggregation. kinetic exponents z z' are obtained from temporal evolution mean cluster size...
We present a method to move and control drops of water on superhydrophobic surfaces using magnetic fields. Small (volume 5–35μl) that contain fractions paramagnetic particles as low 0.1% in weight can be moved at relatively high speed (7cm∕s) by displacing permanent magnet placed below the surface. Coalescence two has been demonstrated moving drop contains towards an aqueous was previously pinned surface defect. This approach microfluidics advantages faster more flexible over movement.
The magnetic needle interfacial shear rheometer is a valuable tool for the study of mechanical properties thin fluid films or monolayers. However, it difficult to differentiate and subphase contributions drag on needle. In principle, problem can be addressed by decreasing diameter, which decreases bulk contribution while remains essentially same. Here we show results obtained when using new type needle, that microwires with diameter approximately 10 times thinner than commercial needles. We...
The outcome of allogeneic hematopoietic stem cell transplantation (HCT) in patients with myeloid malignancies is better those without minimal residual disease (MRD) than MRD+, as assessed by multiparametric flow cytometry (MPFC). WT1 quantitation also has been used to assess the probability relapse acute myelogenous leukemia (AML) treated chemotherapy. We analyzed clinical value normalized bone marrow levels a measure expanded progenitor compartment consecutive series 193 adult who underwent...
We report experimental results on the aggregation kinetics in magnetorheological fluids subject to a constant uniaxial magnetic field using technique of scattering dichroism. show that number aggregated particles displays long-time power-law dependence with exponents correspond two different regimes. These regimes coincide 3D and 1D-like aggregation. also derive values both time for particles.
In this work, we study how structures develop on 2D dense binary colloidal monolayers as a function of the relative concentration small/large particles. Translational and orientational distribution functions have been used to monitor continuous phase transition through detailed characterization global local order. We observed gradual enhancement in number particles different sizes leads vitrification process homogeneous glasses form equimolar mixtures. Also, performed simple calculation that...
Views Icon Article contents Figures & tables Video Audio Supplementary Data Peer Review Share Twitter Facebook Reddit LinkedIn Tools Reprints and Permissions Cite Search Site Citation J. Tajuelo, M. Pastor, A. Rubio; A magnetic rod interfacial shear rheometer driven by a mobile trap. Rheol. 1 November 2016; 60 (6): 1095–1113. https://doi.org/10.1122/1.4958668 Download citation file: Ris (Zotero) Reference Manager EasyBib Bookends Mendeley Papers EndNote RefWorks BibTex toolbar search...
An experimental study of the equilibrium properties and surface rheology Langmuir monolayers poly(methyl methacrylate) (PMMA) at air/water interface has been carried out as a function polymer concentration (Γ) molecular weight (M(w)). Dilational shear complex elasticity moduli covering frequency range from 10(-3) to 0.2 Hz have discussed. It was found that air∕water behaves poor solvent for PMMA monolayers, thus suggesting coils take collapsed soft-disks (pancakes) shape interface. The...
The Dupont’s lark (Chersophilus duponti) is an endangered passerine typical of Mediterranean shrub-steppes, whose European distribution restricted to Spain. Here, we update the population size and range species at a scale evaluate (i) current status; (ii) change in from 2004 2009 period (2017–2022); (iii) effectiveness network special protection areas (SPAs) for protecting lark. showed decrease 29.9%, declining ca. 3267 2289 territorial males period. Moreover, has suffered contraction its...
Received 9 January 1990DOI:https://doi.org/10.1103/PhysRevLett.65.1389©1990 American Physical Society