PHILADELPHIA — In an effort to better understand sea-level rise and flooding from hurricanes along the Atlantic and Gulf coasts, the National Oceanic and Atmospheric Administration has awarded a three-year, $1.5 million grant to a research team led by the University of Pennsylvania’s Benjamin Horton. The study aims to provide predictive models and reports that can be used both by environmental scientists and coastal communities.
Rob Kurzban of the School of Arts and Sciences comments on the Dunning-Kruger effect.
PHILADELPHIA — In solid materials with regular atomic structures, figuring out weak points where the material will break under stress is relatively easy. But for disordered solids, like glass or sand, their disordered nature makes such predictions much more daunting tasks.
Arjun Yodh and student Peter Yunker of the School of Arts and Sciences discuss the “coffee ring effect.”
PHILADELPHIA — It is helpful — even life-saving — to have a warning sign before a structural system fails, but, when the system is only a few nanometers in size, having a sign that’s easy to read is a challenge. Now, thanks to a clever bit of molecular design by University of Pennsylvania and Duke University bioengineers and chemists, such warning can come in the form of a simple color change.
A team of Penn physicists have figured out how to conquer the “coffee ring effect”—that “O”-shaped stain of particles that is always left over after coffee drops evaporate — by changing the shape of the particles. The discovery provides engineers with a new set of tools that could have implications in various industrial settings, particularly printing and painting.
PHILADELPHIA — A team of University of Pennsylvania physicists has shown how to disrupt the “coffee ring effect” — the ring-shaped stain of particles left over after coffee drops evaporate — by changing the particles' shape. The discovery provides new tools for engineers to deposit uniform coatings.
PHILADELPHIA — An international team of astronomers has discovered a huge mass of warm water vapor in the central regions of a distant quasar, marking the farthest place in the universe that water has been detected.