109 citations
Counting papers with at most 25 authors, so collaboration author lists do not stand in for the people here.
- ETH ZurichCH19 papers
- Swiss Federal Institute for Forest, Snow and Landscape ResearchCH6 papers
- Swiss Federal Institute of Aquatic Science and TechnologyCH6 papers
- Imperial College LondonGB5 papers
- Centre National de la Recherche ScientifiqueFR2 papers
- Institute of Mechanical SystemsCH2 papers
- Istituto Nazionale di Fisica Nucleare, Sezione di GenovaIT2 papers
- Leiden UniversityNL2 papers
- Max Planck Institute for Dynamics and Self-OrganizationDE2 papers
- Max Planck University of Twente Center for Complex Fluid DynamicsNL2 papers
- University of CambridgeGB2 papers
- University of TwenteNL2 papers
19 papers
Slower swimming promotes chemotactic encounters between bacteria and small phytoplankton
Riccardo Foffi, Douglas R. Brumley, François Peaudecerf +2
Chemotaxis enables marine bacteria to increase encounters with phytoplankton cells by reducing their search times, provided that bacteria detect noisy chemical gradients around phy…
Fluid flow generates bacterial conjugation hotspots by increasing the rate of shear-driven cell-cell encounters
Matti Zbinden, Jana S. Huisman, Natasha Blitvic +2
Conjugation accelerates bacterial evolution by enabling bacteria to acquire genes horizontally from their neighbors. Plasmid donors must physically encounter and connect with recip…
Shock propagation from the Russia-Ukraine conflict on international multilayer food production network determines global food availability
Moritz Laber, Peter Klimek, Martin Bruckner +2
Dependencies in the global food production network can lead to shortages in numerous regions, as demonstrated by the impacts of the Russia-Ukraine conflict on global food supplies.…
Universal alignment in turbulent pair dispersion
Ron Shnapp, Stefano Brizzolara, Marius M. Neamtu-Halic +2
Countless processes in nature and industry, from rain droplet nucleation to plankton interaction in the ocean, are intimately related to turbulent fluctuations of local concentrati…
A single parameter can predict surfactant impairment of superhydrophobic drag reduction
Fernando Temprano-Coleto, Scott M. Smith, François J. Peaudecerf +3
Recent experimental and computational investigations have shown that trace amounts of surfactants, unavoidable in practice, can critically impair the drag reduction of superhydroph…
Transition from shear-dominated to Rayleigh-Taylor turbulence
Stefano Brizzolara, Jean-Paul Mollicone, Maarten van Reeuwijk +2
Turbulent mixing layers in nature are often characterized by the presence of a mean shear and an unstable buoyancy gradient between two streams of different velocity. Depending on…
Fiber Tracking Velocimetry for two-point statistics of turbulence
Stefano Brizzolara, Marco Edoardo Rosti, Stefano Olivieri +3
We propose and validate a novel experimental technique to measure two-point statistics of turbulent flows. It consists in spreading rigid fibers in the flow and tracking their posi…
Role of vortical structures for enstrophy and scalar transport in flows with and without stable stratification
M. M. Neamtu-Halic, J. -P. Mollicone, M. van Reeuwijk +1
In this paper, we investigate the enstrophy dynamics in relation to objective Eulerian coherent structures (OECSs) and their impact on the enstrophy and scalar transport near the t…
Efficient mate finding in planktonic copepods swimming in turbulence
François-Gaël Michalec, Itzhak Fouxon, Sami Souissi +1
Zooplankton live in dynamic environments where turbulence may challenge their limited swimming abilities. How this interferes with fundamental behavioral processes remains elusive.…
Connecting the time evolution of the turbulence interface to coherent structures
M. M. Neamtu-Halic, D. Krug, J. P. Mollicone +3
The surface area of turbulent/non-turbulent interfaces (TNTIs) is continuously produced and destroyed via stretching and curvature/propagation effects. Here, the mechanisms respons…
Encounter rates between bacteria and small sinking particles
Jonasz Słomka, Uria Alcolombri, Eleonora Secchi +2
Bacteria in aquatic environments often interact with particulate matter. A key example is bacterial degradation of marine snow responsible for carbon export from the upper ocean in…
Migration and accumulation of bacteria with chemotaxis and chemokinesis
Theresa Jakuszeit, James Lindsey-Jones, François J. Peaudecerf +1
Bacteria can chemotactically migrate up attractant gradients by controlling run-and-tumble motility patterns. In addition to this well-known chemotactic behaviour, several soil and…
Lagrangian coherent structures and entrainment near the turbulent/non-turbulent interface of a gravity current
M. M. Neamtu-Halic, D. Krug, G. Haller +1
In this paper, we employ Lagrangian coherent structures (LCSs) theory for the three dimensional vortex eduction and investigate the effect of large-scale vortical structures on the…
Mixing and entrainment are suppressed in inclined gravity currents
Maarten van Reeuwijk, Markus Holzner, C. P. Caulfield
We explore the dynamics of inclined temporal gravity currents using direct numerical simulation, and find that the current creates an environment in which the flux Richardson numbe…
Geometry and mechanics of microdomains in growing bacterial colonies
Zhihong You, Daniel J. G. Pearce, Anupam Sengupta +1
Bacterial colonies are abundant on living and nonliving surfaces and are known to mediate a broad range of processes in ecology, medicine, and industry. Although extensively resear…
Cross-talk between topological defects in different fields revealed by nematic microfluidics
Luca Giomi, Žiga Kos, Miha Ravnik +1
Topological defects are singularities in material fields that play a vital role across a range of systems: from cosmic microwave background polarization to superconductors, and bio…
Experimental investigation of transitional flow in a toroidal pipe
J. Kühnen, M. Holzner, B. Hof +1
The flow instability and further transition to turbulence in a toroidal pipe (torus) with curvature (tube-to-coiling diameter) 0.049 is investigated experimentally. The flow inside…
The turbulence boundary of a temporal jet
Maarten van Reeuwijk, Markus Holzner
We examine the structure of the turbulence boundary of a temporal plane jet at using statistics conditioned on the enstrophy. The data is obtained by direct numerical sim…
Viscous tilting and production of vorticity in homogeneous turbulence
M. Holzner, M. Guala, B. Lüthi +4
Viscous depletion of vorticity is an essential and well known property of turbulent flows, balancing, in the mean, the net vorticity production associated with the vortex stretchin…