New paper on the cyberphysical risks of hacked cars

What do hacked connected cars have in common with biophysics and soft matter? Active and emergent phenomena! In a collaboration with Jesse Silverberg of Multiscale Systems, Inc., we find that the consequences of a large scale hack of connected cars could be dire – but are predicted through an extension of percolation theory! Paper here, and summary in Physics here.

New paper on how to evolve a large multicellular body!

In our previous paper on the evolution of multicellularity, we showed that mechanical stresses develop during growth, eventually fracture clusters of cells into two pieces. Now we ask: when faced with this mechanical challenge, what is the best way to evolve large size? In our new paper, selected as a Rapid Communication in PRE, we show increasing bond strength does little, but modify how cells pack does a lot!

Our new paper on the mechanical consequences of death and reproduction is out!

Our new paper in PRL investigates an effective fluctuation response relationship in biofilms featuring death and reproduction. The fluctuation-dissipation theorem, derived by Harry Nyquist in the 1920’s, is essential to our understanding of equilibrium solids. The relationship between thermal fluctuations and mechanical responses provided a framework through which mechanical properties of solids were measurable and predictable. Our paper. The same may be possible for living films; we investigated it in collaboration with the Hammer lab, here  at Georgia Tech’s School of Biological Sciences. Our work builds on a beautiful paper from Risler, Peilloux, and Proust, which investigated a model of apoptosis and reproduction in tissues.