20 citations · 70 across the 10 of their papers we have counts for
11 papers
Spreading droplets of yield-stress fluids with and without gravity
Linnea Heitmeier, Olfa D'Angelo, Maziyar Jalaal +1
We investigate the effect of gravity on the spreading of droplets of yield stress fluids, by performing both microgravity experiments (in a drop tower) and experiments under terres…
Granular jamming and rheology in microgravity
Olfa D'Angelo, Qing Yu, Thorsten Pöschel
Understanding how granular materials behave in low gravity is crucial for planetary science and space exploration. It can also help us understand granular phenomena usually hidden…
Granular clogging across gravities: a unified scaling
Oliver Gaida, Olfa D'Angelo, Jonathan E. Kollmer
Lacking a universal law for granular flows across gravitational environments, fundamental processes such as hopper discharge remain vulnerable to failure in low gravity environment…
Rheological regimes in agitated granular media under shear
Olfa D'Angelo, Matthias Sperl, W. Till Kranz
Agitated granular media have a rich rheology: they exhibit Newtonian behavior at low shear rate and density, develop a yield stress at high density, and cross over to Bagnoldian sh…
Granular jamming gripper with integrated suction
Angel Santarossa, Olfa D'Angelo, Achim Sack +1
Granular grippers can manipulate a wide variety of objects, but need to be pressed on the object to conform to it. If the object is placed on unstable ground, e.g., on sand or wate…
The manifold rheology of fluidized granular media
Olfa D'Angelo, Abhishek Shetty, Matthias Sperl +1
Fluidized granular media have a rich rheology: measuring shear stress as a function of shear rate , they exhibit Newtonian behavior for low densities and sh…
Structural features of jammed-granulate metamaterials
Holger Götz, Thorsten Pöschel, Olfa D'Angelo
Granular media near jamming exhibit fascinating properties, which can be harnessed to create jammed-granulate metamaterials: materials whose characteristics arise not only from the…
Effect of Particle Size on the Suction Mechanism in Granular Grippers
Angel Santarossa, Olfa D'Angelo, Achim Sack +1
Granular grippers are highly adaptable end-effectors that exploit the reversible jamming transition of granular materials to hold and manipulate objects. Their holding force comes…
Spreading of droplets under various gravitational accelerations
Olfa D'Angelo, Felix Kuthe, Kasper van Nieuwland +3
We describe a setup to perform systematic studies on the spreading of droplets of complex fluids under microgravity conditions. Tweaking the gravitational acceleration under which…
Granular piston-probing in microgravity: powder compression, from densification to jamming
Olfa D'Angelo, Anabelle Horb, Aidan Cowley +2
The macroscopic response of granular solids is determined by the microscopic fabric of force chains, which, in turn, is intimately linked to the history of the solid. To query the…
A gravity-independent powder-based additive manufacturing process tailored for space applications
Olfa D'Angelo, Felix Kuthe, Szu-Jia Liu +7
The future of space exploration missions will rely on technologies increasing their endurance and self-sufficiency, including for manufacturing objects on-demand. We propose a proc…