A5044952410- Surface Modification and Superhydrophobicity
- Electrohydrodynamics and Fluid Dynamics
- Electrowetting and Microfluidic Technologies
- Vehicular Ad Hoc Networks (VANETs)
- Evacuation and Crowd Dynamics
- Modular Robots and Swarm Intelligence
- Adhesion, Friction, and Surface Interactions
- Advanced Sensor and Energy Harvesting Materials
- Characterization and Applications of Magnetic Nanoparticles
- Tribology and Lubrication Engineering
- Fluid Dynamics and Heat Transfer
- Innovative Microfluidic and Catalytic Techniques Innovation
- Opportunistic and Delay-Tolerant Networks
Technical University of Darmstadt
2018-2023
Abstract Water drops moving on surfaces are not only an everyday phenomenon seen windows but also form essential part of many industrial processes. Previous understanding is that drop motion dictated by viscous dissipation and activated dynamics at the contact line. Here we demonstrate these two effects cannot fully explain complex paths sliding or impacting drops. To accurately determine forces experienced drops, imaged their trajectory when down a tilted surface, applied relevant equations...
A method to manipulate and control droplets on a surface is presented. The based inducing electric dipoles inside the using homogeneous external field. It shown that repulsive dipole force efficiently suppresses coalescence of moving liquid-infused (LIS). Using combination experiments, numerical computations semi-analytical models, dependence repulsion droplet volumes, distance between field strength revealed. allows suppress in complex multi-droplet flows real-time adaptive. When exceeds...
We propose a simple method of electrostatic manipulation aqueous droplets sitting on liquid-infused surface. The electric field is created between pin electrode not touching the and grounded substrate. Experiments numerical simulations are performed to study sliding along Sliding velocities in excess 1 cm/s can be achieved. scaling velocity with applied voltage difference droplet volume studied. Good agreement experimental simulation data indicates that model captures essential physics.
A plate floating on a cushion of air blown through porous substrate is set in motion when herringbone-shaped grooves redirect the airflow preferred direction, allowing contactless manipulation objects.
Abstract Water drops sliding down inclined planes are an everyday phenomenon and important in many technical applications. Previous understanding is that the motion mainly dictated by viscous capillary forces. Here we demonstrate that, addition to these forces, on hydrophobic surfaces affected self-generated electrostatic In a novel approach determine forces moving imaged their trajectory when tilted surface apply equation of motion. We found drop low-permittivity substrates significantly...
Fisher Scientific).