Raymond E. Goldstein

Aug 5, 2024 | link.aps.org | George T Fortune |Wilberforce Road |Eric Lauga |Raymond E. Goldstein

The humble Petri dish is perhaps the simplest setting in which to examine the locomotion of swimming organisms, particularly those whose body size is tens of microns to millimeters. The fluid layer in such a container has a bottom no-slip surface and a stress-free upper boundary. It is of fundamental interest to understand the flow fields produced by the elementary and composite singularities of Stokes flow in this geometry.

Feb 13, 2024 | biorxiv.org | Eric Lauga |Raymond E. Goldstein |George T Fortune

AbstractThe humble Petri dish is perhaps the simplest setting in which to examine the locomotion of swimming organisms, particularly those whose body size is tens of microns to millimetres. The fluid layer in such a container has a bottom no-slip surface and a stress-free upper boundary. It is of fundamental interest to understand the flow fields produced by the elementary and composite singularities of Stokes flow in this geometry.

Feb 1, 2024 | link.aps.org | Raymond E. Goldstein |Wilberforce Road |Robert Jack |Lensfield Road

Periodical cicadas exhibit life cycles with durations of 13 or 17 years, and it is now accepted that large prime cycles arose to avoid synchrony with predators. Less well explored is how, in the face of intrinsic biological and environmental noise, insects within a brood emerge together in large successive swarms from underground during springtime warming.