A new model for capillary rise in nano-channels offers insights into fracking

With fracking, scientists have calculated the expected level of capillary rise with the Lucas-Washburn equation, a mathematical model whose earliest parameters were first devised nearly a century ago. The challenge, however, is that that the equation has not been completely accurate in predicting the actual rise observed in nano-capillary laboratory experiments. Researchers studying this deviation describe their findings this week in the journal Applied Physics Letters.

What’s the best way to cook pasta? (video)

Cooking pasta chemically changes how the proteins and starches interact, making noodles sticky and springy. Therefore, what you do -- or don't do -- to the cooking water can change the edible result. With a little chemistry know-how, you can serve up a delectable al dente pasta instead of a an unappetizing ball of noodles. Watch the latest Speaking of Chemistry video here: https://youtu.be/gSOnxUBJs8A.

Revealing the microscopic mechanisms in perovskite solar cells

In just a few years, researchers have achieved remarkable power conversion efficiency with materials with perovskite crystal structure, comparable with the best photovoltaic materials available. Now, researchers have revealed the physics for how an important component of a perovskite solar cell works -- a finding that could lead to improved solar cells or even newer and better materials. They describe their experiments in this week's issue of the journal Applied Physics Letters.