3 papers
astro-ph.EP2020
Detection of spark discharges in an agitated Mars dust simulant isolated from foreign surfaces
Joshua Méndez Harper, Josef Dufek, George McDonald
Numerous laboratory experiments, starting in the Viking Lander era, have reported that frictional interactions between Martian analog dust grains can catalyze electrostatic process…
physics.geo-ph2019
Microphysical effects of water content and temperature on the triboelectrification of volcanic ash on long timescales
Joshua Méndez Harper, Leah Courtland, Josef Dufek +1
The effects of water and temperature on the triboelectrification of granular materials have been reported by numerous authors, but have not been studied robustly in the context of…
astro-ph.EP2018
Triboelectrification of KCl and ZnS particles in approximated exoplanet environments
Joshua Méndez Harper, Christiane Helling, Josef Dufek
When mobilized, granular materials become charged as grains undergo collisions and frictional interactions. On Earth, this process, known as triboelectrification, has been recogniz…