344 citations · 818 across the 17 of their papers we have counts for
10 papers · 1 filter
Regular and Anomalous Motion of Individual Magnetic Quincke Rollers Under Rotating Magnetic Field
Zoran M. Cenev, Ville S. I. Havu, Jaakko V. I. Timonen
We report the motion of individual magnetic Quincke rollers composed of silica particles doped with superparamagnetic iron oxide nanoparticles, whose activity arises from the coupl…
Unlocking the full potential of jumping condensation on microstructured surfaces
Mariia S. Kiseleva, Tytti Karki, Mika Latikka +11
Water condensation on superhydrophobic surfaces can generate spontaneous droplet jumping, enabling rapid condensate removal and improved thermal and mass transfer. Although this ef…
Active Rosensweig Patterns
Carlo Rigoni, Max Philipp Holl, Alberto Scacchi +5
Ferrofluids, colloidal dispersions of magnetic nanoparticles, are renowned for pattern formation like few other materials. The Rosensweig instability of a horizontal ferrofluid-air…
Magnetically tunable electrokinetic instability and structuring of non-equilibrium nanoparticle gradients
Fereshteh Sohrabi, Carlo Rigoni, Tomy Cherian +2
Inspired by emergent behaviors of living matter, there is increasing interest in developing approaches to create dynamic patterns and structures in synthetic materials with control…
A Coarse-grained Model for Aqueous Two-phase Systems: Application to Ferrofluids
Alberto Scacchi, Carlo Rigoni, Mikko Haataja +2
Aqueous two-phase systems (ATPSs), that is, phase-separating solutions of water soluble but mutually immiscible molecular species, offer fascinating prospects for selective partiti…
Magnetic control of orientational order and intrinsic hydrodynamic instability in bacterial turbulence
Kazusa Beppu, Jaakko V. I. Timonen
Highly concentrated active agents tend to exhibit turbulent flows, reminiscent of classical hydrodynamic turbulence, which has attracted considerable attention lately. Controlling…
Ferrofluidic aqueous two-phase system with ultralow interfacial tension, instabilities and pattern formation
Carlo Rigoni, Bent Harnist, Grégory Beaune +1
Ferrofluids are strongly magnetic fluids consisting of magnetic nanoparticles dispersed in a carrier fluid. Besides their technological applications, they have a tendency to form b…
Electroferrofluids with non-equilibrium voltage-controlled magnetism, interfaces, and patterns
Tomy Cherian, Fereshteh Sohrabi, Carlo Rigoni +2
Materials with continuous dissipation can exhibit responses and functionalities that are not possible in thermodynamic equilibrium. While this concept is well-known, a major challe…
Structural diversity in electrohydrodynamically driven active and organized liquid states
Geet Raju, Nikos Kyriakopoulos, Jaakko V. I. Timonen
Spontaneous emergence of organized states in materials driven by non-equilibrium conditions is of significant fundamental and technological interest. In many cases, the organized s…
Wetting of ferrofluids: phenomena and control
Mika Latikka, Matilda Backholm, Jaakko V. I. Timonen +1
Ferrofluids are liquids exhibiting remarkably strong response to magnetic fields, which leads to fascinating properties useful in various applications. Understanding the wetting pr…