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.
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.
Penn Graduate School of Education to Host National Education Writers Association Annual Seminar in 2012
PHILADELPHIA — The Graduate School of Education at the University of Pennsylvania is partnering with the American Educational Research Association to host the Education Writers Association’s 2012 national seminar May 17-19 on the Penn campus.
The conference attracts nearly 250 journalists, communication professionals, scholars and newsmakers each year.
PHILADELPHIA — A pandemic of ailments called the "allergic march" -- the gradual acquisition of overlapping allergic diseases that commonly begins in early childhood -- has frustrated both parents and physicians. For the last three decades, an explosion of eczema, food allergies, hay fever, and asthma have afflicted children in the United States, the European Union, and many other countries.
Anna Marie Chang is quoted about her research, led by Judd Hollander of the Perelman School of Medicine.
Matt Blaze of the School of Engineering and Applied Science led a study of eavesdropping through security flaws.
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.