33 citations · 65 across the 4 of their papers we have counts for
5 papers
Aeolian sediment transport on Io from lava-frost interactions
George D. McDonald, Joshua Méndez Harper, Lujendra Ojha +4
Surface modification on Jupiter's volcanically active moon, Io, has to date been attributed almost exclusively to lava emplacement and volcanic plume deposits. Here we demonstrate…
Charge injection into the atmosphere by explosive volcanic eruptions through triboelectrification and fragmentation charging
Joshua Méndez Harper, Corrado Cimarelli, Valeria Cigala +2
Volcanic eruptions are associated with a wide range of electrostatic effects. Increasing evidence suggests that high-altitude discharges (lightning) in maturing plumes are driven b…
Force spectroscopy with electromagnetic tweezers
Joseph G. Piccolo, Joshua Mendez Harper, Dan Kovari +2
Force spectroscopy using magnetic tweezers (MT) is a powerful method to probe the physical characteristics of single polymers. Typically, molecules are functionalized for specific…
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…
Pore-size dependence and slow relaxation of hydrogel friction on smooth surfaces
Nicholas L. Cuccia, Suraj Pothineni, Brady Wu +2
Hydrogel consists of a crosslinked polymer matrix imbibed with a solvent such as water at volume fractions that can exceed 90\%. They are important in many scientific and engineeri…