Static electrification is among the earliest of the sciences, well known to us all and with
widespread and important consequences. Yet, its most basic foundations remain poorly …

Triboelectrification is the spontaneous charging of two bodies when released from contact.
Even though its manifestation is commonplace, in for instance triboelectric nanogenerators …

In protoplanetary disks, solid objects (so-called planetesimals) are formed from dust.
Micrometre-sized dust grains grow into millimetre-sized aggregates. Once those aggregates …

We present a numerical method for simulating the electrostatic interaction of a cluster of
charged non-spherical particles as they collide with each other. The boundary element …

From colloid suspension to particle aggregation in protoplanetary formation, electrostatic
attraction and repulsion between particles is a key mechanism behind the aggregation and …

Identical glass spheres of 434±17 μm diameter are charged in collisions among each other.
At slow speed some form dimers under microgravity and oscillate within the electrical field of …

In this paper, the prototypical process of the normal impact of dense agglomerates is
investigated using the discrete element method–boundary element method coupled …

We introduce collisions of solids as a new and efficient ionization mechanism for gas in
protoplanetary discs, which especially operates in the dense midplane of protoplanetary …

Context. Particles in protoplanetary disks go through a number of phases that are dominated
by collisions. In each of these events, grains exchange electrical charge via triboelectric …

Dust emission mechanisms as one aspect of wind-driven particle motion on planetary
surfaces are still poorly understood. The microphysics is important though as it determines …