446 citations · 1.5k across the 19 of their papers we have counts for
19 papers
Steering self-organisation through confinement
Nuno A. M. Araújo, Liesbeth M. C. Janssen, Thomas Barois +26
Self-organisation is the spontaneous emergence of spatio-temporal structures and patterns from the interaction of smaller individual units. Examples are found across many scales in…
Confinement-induced accumulation and spontaneous de-mixing of microscopic active-passive mixtures
Stephen Williams, Raphaël Jeanneret, Idan Tuval +1
Understanding the out-of-equilibrium properties of noisy microscale systems and the extent to which they can be modulated externally, is a crucial scientific and technological chal…
Microbial narrow-escape is facilitated by wall interactions
Mathieu Souzy, Antoine Allard, Jean-François Louf +3
Cells have evolved efficient strategies to probe their surroundings and navigate through complex environments. From metastatic spread in the body to swimming cells in porous materi…
Geometric phase of spheroidal particles in a fluid flow and its control
Jorge Arrieta, Julyan H. E Cartwright, Oreste Piro +1
We investigate the dynamics of spheroids immersed in the journal bearing flow subject to a contractible non-reciprocal loop. We show how geometric phases appear not only in the pos…
Photo-bioconvection: towards light-control of flows in active suspensions
Armand Javadi, Jorge Arrieta, Idan Tuval +1
The persistent motility of the individual constituents in microbial suspensions represents a prime example of so-called active matter systems. Cells consume energy, exert forces an…
Turbulence induces clustering and segregation of non-motile, buoyancy-regulating phytoplankton
Matteo Borgnino, Jorge Arrieta, Guido Boffetta +2
Turbulence plays a major role in shaping marine community structure as it affects organism dispersal and guides fundamental ecological interactions. Below oceanographic mesoscale d…
Light-Control of Localised Photo-Bio-Convection
Jorge Arrieta, Marco Polin, Ramón Saleta-Piersanti +1
Microorganismal motility is often characterised by complex responses to environmental physico-chemical stimuli. Although the biological basis of these responses is often not well u…
Phototaxis beyond turning: persistent accumulation and response acclimation of the microalga Chlamydomonas reinhardtii
Jorge Arrieta, Ana Barreira, Maurizio Chioccioli +2
Phototaxis is an important reaction to light displayed by a wide range of motile microorganisms. Flagellated eukaryotic microalgae in particular, like the model organism Chlamydomo…
Microalgae scatter off solid surfaces by hydrodynamic and contact forces
Matteo Contino, Enkeleida Lushi, Idan Tuval +2
Interactions between microorganisms and solid boundaries play an important role in biological processes, like egg fertilisation, biofilm formation and soil colonisation, where micr…
Runaway electrification of friable self-replicating granular matter
Julyan H. E. Cartwright, Bruno Escribano, Hinrich Grothe +3
We establish that the nonlinear dynamics of collisions between particles favors the charging of a insulating, friable, self-replicating granular material that undergoes nucleation,…
Frontiers of chaotic advection
Hassan Aref, John R. Blake, Marko Budišić +20
This work reviews the present position of and surveys future perspectives in the physics of chaotic advection: the field that emerged three decades ago at the intersection of fluid…
Antiphase Synchronization in a Flagellar-Dominance Mutant of Chlamydomonas
Kyriacos C. Leptos, Kirsty Y. Wan, Marco Polin +3
Groups of beating flagella or cilia often synchronize so that neighboring filaments have identical frequencies and phases. A prime example is provided by the unicellular biflagella…
Brinicles as a case of inverse chemical gardens
Julyan H. E. Cartwright, Bruno Escribano, Diego L. González +2
Brinicles are hollow tubes of ice from centimetres to metres in length that form under floating sea ice in the polar oceans when dense, cold brine drains downwards from sea ice int…
Geometric Mixing, Peristalsis, and the Geometric Phase of the Stomach
Jorge Arrieta, Julyan H. E. Cartwright, Emmanuelle Gouillart +3
Mixing fluid in a container at low Reynolds number - in an inertialess environment - is not a trivial task. Reciprocating motions merely lead to cycles of mixing and unmixing, so c…
Geometric phases in discrete dynamical systems
Julyan H. E. Cartwright, Nicolas Piro, Oreste Piro +1
In order to study the behaviour of discrete dynamical systems under adiabatic cyclic variations of their parameters, we consider discrete versions of adiabatically-rotated rotators…
Direct measurement of the flow field around swimming microorganisms
Knut Drescher, Raymond E. Goldstein, Nicolas Michel +2
Swimming microorganisms create flows that influence their mutual interactions and modify the rheology of their suspensions. While extensively studied theoretically, these flows hav…
Dancing Volvox: Hydrodynamic Bound States of Swimming Algae
Knut Drescher, Kyriacos C. Leptos, Idan Tuval +3
The spherical alga Volvox swims by means of flagella on thousands of surface somatic cells. This geometry and its large size make it a model organism for studying the fluid dynamic…
Dynamic Modeling of the Electric Transportation Network
Alessandro Scirè, Idán Tuval, Víctor M. Eguíluz
We introduce a model for the dynamic self-organization of the electric grid. The model is characterized by a conserved magnitude, energy, that can travel following the links of the…
Bailout Embeddings and Neutrally Buoyant Particles in Three-Dimensional Flows
J. H. E. Cartwright, M. O. Magnasco, O. Piro +1
We use the bailout embeddings of three-dimensional volume-preserving maps to study qualitatively the dy- namics of small spherical neutrally buoyant impurities suspended in a time-…