310 citations · 2.7k across the 56 of their papers we have counts for
4 papers · 2 filters
The structure and dynamics of self-assembling colloidal monolayers in oscillating magnetic fields
Alison E. Koser, Nathan C. Keim, Paulo E. Arratia
Many fascinating phenomena such as large-scale collective flows, enhanced fluid mixing and pattern formation have been observed in so-called active fluids, which are composed of pa…
Self-assembling paramagnetic colloids in oscillating magnetic fields
Alison E. Koser, Nathan C. Keim, Paulo E. Arratia
Many fascinating phenomena such as large-scale collective flows, enhanced fluid mixing and pattern formation have been observed in so-called active fluids, which are composed of pa…
Dropping the Ball: The effect of anisotropic granular materials on ejecta and impact crater shape
Philip Drexler, Nathan Keim, Paulo Arratia
In this fluid dynamics video, we present an experimental investigation of the shape of impact craters in granular materials. Complex crater shapes, including polygons, have been ob…
Undulatory swimming in fluids with polymer networks
D. A. Gagnon, X. N. Shen, P. E. Arratia
The motility behavior of the nematode Caenorhabditis elegans in polymeric solutions of varying concentrations is systematically investigated in experiments using tracking and veloc…