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Dr Marc Pradas

Profile summary

  • Central Academic Staff
  • Senior Lecturer
  • Faculty of Science, Technology, Engineering & Mathematics
  • School of Mathematics & Statistics
  • marc.pradas

Professional biography

I joined the Department of Mathematics & Statistics as a Lecturer in Applied Mathematics in October 2014 after being a postdoc in the Complex Multiphase Systems group at Imperial College London. I graduated as a Doctor on Statistical and Condensed Matter Physics at the University of Barcelona under the supervision of Prof Aurora Hernandez-Machado.

Research interests

My research interests cover a wide range of topics on the interface of applied mathematics, statistical physics, and engineering science. I give particular emphasis on soft condensed matter theory and fluid dynamics, including multiphase flows, microfluidics, and hydrodynamic instabilities; but also stochastic processes and emergent collective phenomena in complex and biological dynamical systems.

Research Activity

Externally funded projects

Droplets with dynamic size on smooth surfaces

RoleStart dateEnd dateFunding source
Lead01/Oct/201830/Sep/2020EPSRC EPSRC Engineering and Physical Sciences Research Council
Droplets interacting with solid surfaces are found in a wide variety of daily life experiences and natural phenomena. Their study serves as a canonical example of a wetting phenomenon which, despite its simplicity, has been shown to be a remarkably complicated problem. Many theoretical efforts over the last few years have focused their attention on understanding how the properties of the solid surface affect the dynamics of the droplet, with particular emphasis on droplet control and manipulation, which is important for a wide range of technological applications, such as liquid-repellent surfaces, micro chemical reactors and fluid transport processes, and the rapidly growing fields of Nano- and micro-fluidics. Quite often the volume of the droplets is subject to external, time-dependent variations - a situation that we refer to as droplets with dynamic size. This occurs, for example, when there is mass exchange through the droplet interface (evaporation/condensation phenomena), or when droplets sit on porous materials so that liquid is absorbed through the pores. This project will explore the fundamental interplay between a time-dependent variation of the droplet volume and simple smooth variations on solid surfaces. We aim to investigate under which conditions a droplet may naturally exhibit lateral motion as its volume changes in time, and to exploit this in applications on droplet control, such as directed motion. The ultimate goal of the proposed research is the systematic and predictive theoretical and computational analysis of the dynamics of droplets with dynamic size on surfaces that have controllable and experimentally amenable properties. As a consequence, the outputs of this project can be used to recommend new design rules, geometries, and operational protocols for improved droplet control and manipulation in technological applications that rely on cooling/heating processes and/or porous-based micro-devices.

Publications

Lacunarity exponents (2019-03-15)
Wilkinson, Michael; Pradas, Marc; Huber, Greg and Pumir, Alain
Journal of Physics A: Mathematical and Theoretical, 52, Article 115101(11)
A linear, second-order, energy stable, fully adaptive finite-element method for phase-field modeling of wetting phenomena (2019)
Aymard, B.; Vaes, U.; Pradas, Marc and Kallidasis, S.
Journal of Computational Physics: X ((In Press))
3D stochastic bicontinuous microstructures: Generation, topology and elasticity (2018-05-01)
Soyarslan, Celal; Bargmann, Swantje; Pradas, Marc and Weissmüller, Jörg
Acta Materialia, 149 (pp. 326-340)
Snap evaporation of droplets on smooth topographies (2018-04-11)
Wells, Gary G.; Ruiz-Gutierrez, Elfego; Le Lirzin, Youen; Nourry, Anthony; Orme, Bethany V.; Pradas, Marc and Ledesma-Aguilar, Rodrigo
Nature Communications, 9, Article 1380
Uniformity transition for ray intensities in random media (2018-03-15)
Pradas, Marc; Pumir, Alain and Wilkinson, Michael
Journal of Physics A: Mathematical and Theoretical, 51, Article 155002(15)
Solitary waves on falling liquid films in the inertia-dominated regime (2018-02-25)
Denner, Fabian; Charogiannis, Alexandros; Pradas, Marc; Markides, Christos N.; van Wachem, Berend G.M. and Kalliadasis, Serafim
Journal of Fluid Mechanics, 837 (pp. 491-519)
Persistent stability of a chaotic system (2018-02-15)
Huber, Greg; Pradas, Marc; Pumir, Alain and Wilkinson, Michael
Physica A: Statistical Mechanics and its Applications, 492 (pp. 517-523)
Chaotic versus stochastic behavior in active-dissipative nonlinear systems (2017-12-21)
Gotoda, Hiroshi; Pradas, Marc and Kalliadasis, Serafim
Physical Review Fluids, 2, Article 124401
Aggregation-fragmentation-diffusion model for trail dynamics (2017-07-21)
Kawagoe, Kyle; Huber, Greg; Pradas, Marc; Wilkinson, Michael; Pumir, Alain and Ben-Naim, Eli
Physical Review E, 96, Article 12142
Convergent Chaos (2017-06-13)
Pradas, Marc; Pumir, Alain; Huber, Greg and Wilkinson, Michael
Journal of Physics A: Mathematical and Theoretical, 50, Article 275101(27)
Controlling roughening processes in the stochastic Kuramoto–Sivashinsky equation (2017-06-01)
Gomes, S.N.; Kalliadasis, S.; Papageorgiou, D.T.; Pavliotis, G.A. and Pradas, M.
Physica D: Nonlinear Phenomena, 348 (pp. 33-43)
Noise-induced transitions in rugged energy landscapes (2016-09-06)
Duncan, A. B.; Kalliadasis, S.; Pavliotis, G. A. and Pradas, M.
Physical Review E, 94, Article 32107(3)
Self-similarity of solitary waves on inertia-dominated falling liquid films (2016-03-21)
Denner, Fabian; Pradas, Marc; Charogiannis, Alexandros; Markides, Christos N.; van Wachem, Berend G. M. and Kalliadasis, Serafim
Physical Review E, 93, Article 33121(3)
Dynamics of Fattening and Thinning 2D Sessile Droplets (2016)
Pradas, M.; Savva, N.; Benziger, J. B.; Kevrekidis, I. G. and Kalliadasis, S.
Langmuir, 32(19) (pp. 4736-4745)
Data-driven coarse graining in action: Modeling and prediction of complex systems (2015-10-16)
Krumscheid, S.; Pradas, M.; Pavliotis, G. A. and Kalliadasis, S.
Physical Review E, 92, Article 42139(4)
Power-law distributions in noisy dynamical systems (2015-09-17)
Wilkinson, Michael; Guicharaz, Robin; Pradas, Marc and Pumir, Alain
EPL, 111, Article 50005(5)
Controlling spatiotemporal chaos in active dissipative-dispersive nonlinear systems (2015-08-19)
Gomes, S. N.; Pradas, M.; Kalliadasis, S.; Papageorgiou, D. T. and Pavliotis, G. A.
Physical Review E, 92, Article 22912(2)
Nonlinear forecasting of the generalised Kuramoto-Sivashinsky equation (2015-02)
Gotoda, Hiroshi; Pradas, Marc and Kalliadasis, Serafim
International Journal of Bifurcation and Chaos (IJBC), 25, Article 1530015(5)
Coherent Structures in Nonlocal Dispersive Active-Dissipative Systems (2015)
Lin, Te-Sheng; Pradas, Marc; Kalliadasis, Serafim; Papageorgiou, Demetrios T. and Tseluiko, Dmitri
SIAM Journal on Applied Mathematics, 75(2) (pp. 538-563)
A new mode reduction strategy for the generalized Kuramoto–Sivashinsky equation (2015)
Schmuck, M.; Pradas, M.; Pavliotis, G. A. and Kalliadasis, S.
IMA Journal of Applied Mathematics, 80(2) (pp. 273-301)
Operating ranges of gas-liquid capillary microseparators: experiments and theory (2014-07-26)
Roydhouse, Mark D.; Pradas, Marc; Al-Rifai, Noor; Azizi, Benjamin; Cao, Enhong; Kalliadasis, Serafim and Gavriilidis, Asterios
Chemical Engineering Science, 114 (30 - 39)
Pulse dynamics in a power-law falling film (2014)
Pradas, M.; Tseluiko, D.; Ruyer-Quil, C. and Kalliadasis, S.
Journal of Fluid Mechanics, 747 (pp. 460-480)
New stochastic mode reduction strategy for dissipative systems (2013-06-12)
Schmuck, M.; Pradas, M.; Kalliadasis, S. and Pavliotis, G. A.
Physical Review Letters, 110, Article 244101(24)
Bound-state formation in interfacial turbulence: direct numerical simulations and theory (2013-02)
Pradas, M.; Kalliadasis, S.; Nguyen, P.-K. and Bontozoglou, V.
Journal of Fluid Mechanics, 716, Article R2
Derivation of effective macroscopic Stokes-Cahn-Hilliard equations for periodic immiscible flows in porous media (2013)
Schmuck, Markus; Pradas, Marc; Pavliotis, Grigorios A and Kalliadasis, Serafim
Nonlinearity, 26, Article 3259(12)
Upscaled phase-field models for interfacial dynamics in strongly heterogeneous domains (2012-11-08)
Schmuck, Markus; Pradas, Marc; Pavliotis, Grigorios A. and Kalliadasis, Serafim
Proceedings of the Royal Society A: Mathematical, Physical and Engineering Sciences, 468(2147) (pp. 3705-3724)
Additive noise effects in active nonlinear spatially extended systems (2012-10)
Pradas, M.; Pavliotis, G.A.; Kalliadasis, S.; Papageorgiou, D.T. and Tseluiko, D.
European Journal of Applied Mathematics, 23(5) (pp. 563-591)
Disorder-induced hysteresis and nonlocality of contact line motion in chemically heterogeneous microchannels (2012-03)
Wylock, Christophe; Pradas, Marc; Haut, Benoit; Colinet, Pierre and Kalliadasis, Serafim
Physics of Fluids, 24, Article 32108(3)
Binary interactions of solitary pulses in falling liquid films (2012)
Pradas, Marc; Kalliadasis, Serafim and Tseluiko, Dmitri
IMA Journal of Applied Mathematics, 77(3) (pp. 408-419)
Pinning and avalanches in hydrophobic microchannels (2011-05-13)
Queralt-Martín, M.; Pradas, M.; Rodríguez-Trujillo, R.; Arundell, M.; Corvera Poiré, E. and Hernández-Machado, A.
Physical Review Letters, 106, Article 194501(19)
Rigorous coherent-structure theory for falling liquid films: viscous dispersion effects on bound-state formation and self-organization (2011-04-01)
Pradas, Marc; Tseluiko, Dmitri and Kalliadasis, Serafim
Physics of Fluids, 23, Article 44104(4)
Noise induced state transitions, intermittency, and universality in the noisy Kuramoto-Sivashinksy equation (2011-02-10)
Pradas, M.; Tseluiko, D.; Kalliadasis, S.; Papageorgiou, D. T. and Pavliotis, G. A.
Physical Review Letters, 106, Article 60602(6)
Activity statistics, avalanche kinetics, and velocity correlations in surface growth (2010-09)
López, Juan M.; Pradas, Marc and Hernández-Machado, A.
Physical Review E, 82(3) (p 31127)
Avalanche dynamics in fluid imbibition near the depinning transition (2009-11)
Pradas, Marc; López, Juan M. and Hernández-Machado, A.
Physical Review E, 80(5) (p 50101)
Influence of disorder strength on phase-field models of interfacial growth (2008-09)
Laurila, T.; Pradas, M.; Hernández-Machado, A. and Ala-Nissila, T.
Physical Review E, 78(3) (p 31603)
Dynamical scaling of imbibition in columnar geometries (2008-05)
Pradas, M.; Hernández-Machado, A. and Rodríguez, M. A.
Physical Review E, 77(5) (p 56305)
Pressure-dependent scaling scenarios in experiments of spontaneous imbibition (2007-11)
Planet, R.; Pradas, M.; Hernández-Machado, A. and Ortín, J.
Physical Review E, 76(5) (p 56312)
Time-dependent couplings and crossover length scales in nonequilibrium surface roughening (2007-07)
Pradas, Marc; López, Juan M. and Hernández-Machado, A.
Physical Review E, 76(1) (p 10102)
Intrinsic versus superrough anomalous scaling in spontaneous imbibition (2006-10)
Pradas, M. and Hernández-Machado, A.
Physical Review E, 74 (p 41608)
Nonlinear Dynamics of Gas-Liquid Separation in a Capillary Microseparator (2018-06-10)
Radhakrishnan, Anand N. P.; Pradas, Marc; Kalliadasis, Serafim and Gavriilidis, Asterios
In : Minichannels ASME 2018 16th International Conference on Nanochannels, Microchannels, and Minichannels (10-13 Jun 2018, Dubrovnik, Croatia)
Interfaces in disordered media. Scaling growth, avalanche dynamics, and microfluidic fronts (2009-09-30)
Pradas, Marc
PhD thesis Universitat de Barcelona

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