1.2k citations · 3k across the 16 of their papers we have counts for
18 papers
Inferring interactions between active particles using harmonic traps
Arnaud Compagnie, Joscha Mecke, Ivo Buttinoni +1
Quantifying the interactions between active Janus particles remains a challenge that needs to be addressed to describe their collective behaviour. Inspired by a photonic force micr…
Active particles in tunable compressible environments
Venkata Manikantha Sai Ganesh Tanuku, Isha Malhotra, Lorenzo Caprini +3
Active particles affect their environment as much as the environment affects their active motion. Here, we present an experimental system where both can be simultaneously adjusted…
Drying of Soft Colloidal Films
Keumkyung Kuk, Julian Ringling, Kevin Gräff +7
Thin films made of deformable micro- and nano-units, such as biological membranes, polymer interfaces, and particle-laden liquid surfaces, exhibit a complex behavior during drying,…
Minimal numerical ingredients describe chemical microswimmers's 3D motion
Maximilian R. Bailey, C. Miguel Barriuso Gutiérrez, José Martín-Roca +6
The underlying mechanisms and physics of catalytic Janus microswimmers is highly complex, requiring details of the associated phoretic fields and the physiochemical properties of c…
Island Hopping of active colloids
Venkata Manikantha Sai Ganesh Tanuku, Peter Vogel, Thomas Palberg +1
Individual self-propelled colloidal particles, like active Brownian particles (ABP) or run-and-tumble swimmers (RT), exhibit characteristic and well-known motion patterns. However,…
Sedimentation and Levitation of Catalytic Active Colloids
Virginia Carrasco-Fadanelli, Ivo Buttinoni
Gravitational effects in colloidal suspensions can be easily turned off by matching the density of the solid microparticles with the one of the surrounding fluid. By studying the m…
Active Colloids in Harmonic Optical Potentials
Ivo Buttinoni, Lorenzo Caprini, Laura Alvarez +2
We study the motion of active patchy colloids in an optical trap using experiments, theory and numerical simulations. To achieve isotropic and harmonic confinement, we prototype mi…
Compression of colloidal monolayers at liquid interfaces: in situ vs. ex situ investigation
Keumkyung Kuk, Vahan Abgarjan, Lukas Gregel +4
The assembly of colloidal particles at liquid/liquid or air/liquid interfaces is a versatile procedure to create microstructured monolayers and study their behavior under compressi…
Microscale Marangoni Surfers
Kilian Dietrich, Nick Jaensson, Ivo Buttinoni +2
We apply laser light to induce the asymmetric heating of Janus colloids adsorbed at water-oil interfaces and realize active micrometric "Marangoni surfers". The coupling of tempera…
Feedback-Controlled Active Brownian Colloids with Space-Dependent Rotational Dynamics
Miguel Angel Fernandez-Rodriguez, Fabio Grillo, Laura Alvarez +4
The non-thermal nature of self-propelling colloids offers new insights into non-equilibrium physics. The central mathematical model to describe their trajectories is active Brownia…
Active Atoms and Interstitials in Two-dimensional Colloidal Crystals
Kilian Dietrich, Ivo Buttinoni, Giovanni Volpe +1
We study experimentally and numerically the motion of a self-phoretic active particle in two-dimensional (2D) loosely-packed colloidal crystals at fluid interfaces. Two scenarios e…
Rational design and fabrication of versatile active colloidal molecules
Songbo Ni, Emanuele Marini, Ivo Buttinoni +2
Active colloids, also known as artificial microswimmers, are self-propelled micro and nanoparticles that convert uniform sources of fuel (e.g. chemical) or uniform external driving…
Interfacial colloidal monolayers under steady shear: structure and flow profiles
Ivo Buttinoni, Zachary A. Zell, Todd M. Squires +1
We study the coupling between the structural dynamics and rheological response of charged colloidal monolayers at water/oil interfaces, driven into steady shear by a microdisk rota…
Reply to Comment on "Circular Motion of Asymmetric Self-Propelling Particles"
Felix Kümmel, Borge ten Hagen, Raphael Wittkowski +6
In a Comment [Phys. Rev. Lett. 113, 029801 (2014)] on our Letter on self-propelled asymmetric particles [Phys. Rev. Lett. 110, 198302 (2013); arXiv:1302.5787], Felderhof claims tha…
Dynamical clustering and phase separation in suspensions of self-propelled colloidal particles
Ivo Buttinoni, Julian Bialké, Felix Kümmel +3
We study experimentally and numerically a (quasi) two dimensional colloidal suspension of self-propelled spherical particles. The particles are carbon-coated Janus particles, which…
Circular motion of asymmetric self-propelling particles
Felix Kümmel, Borge ten Hagen, Raphael Wittkowski +5
Micron-sized self-propelled (active) particles can be considered as model systems for characterizing more complex biological organisms like swimming bacteria or motile cells. We pr…
Active Brownian Motion Tunable by Light
Ivo Buttinoni, Giovanni Volpe, Felix Kümmel +2
Active Brownian particles are capable of taking up energy from their environment and converting it into directed motion; examples range from chemotactic cells and bacteria to artif…
Microswimmers in Patterned Environments
Giovanni Volpe, Ivo Buttinoni, Dominik Vogt +2
We demonstrate with experiments and simulations how microscopic self-propelled particles navigate through environments presenting complex spatial features, which mimic the conditio…