By mimicking naturally-occurring nanostructures found in things like water striders, spiders and lotus leaves, scientists have created hydrophobic surfaces that could prove invaluable for everything from pipes to boats and submarines. Now researchers at Northwestern University have deduced the optimal texture roughness required to achieve this property and keep surfaces dry underwater for months at a time.
Jet-setters and night owls will have felt the wrath of an off-kilter body clock, by way of the physical impact it can have on immediate well being. A yearning to understand the underlying reasons for this has been the subject of much scientific interest, and has led to some rather strange products like LED light glasses and glowing pillows. But by studying the biological clock of a humble fruit fly, researchers at Northwestern University are claiming to have uncovered the precise mechanisms that bring us in and out of sleep, with their evidence suggesting these switches date back hundreds of millions of years.
Scientists at Northwestern University and the U.S. Department of Energy have found that perovskite cells, one of the most promising solar technologies of recent years, can repay their energy cost over 10 times faster than traditional silicon-based solar cells. The finding confirms that, once issues related to cell longevity are ironed out, perovskite cells could soon bring us solar energy on the cheap, and do so with less impact on the environment over their lifetime.
One of the problems with depression is that because it often forms so
gradually, many people don't even realize that they're suffering from it
– they just assume that normal life is pretty dreary. With that in
mind, researchers from Chicago's Northwestern University have devised a
method of analyzing at-risk individuals' smartphone use, to see if
they're developing signs of the disorder.
A new 3D-printing ink being developed at Northwestern University could soon make it possible to build objects which are made of graphene for 60 percent of their volume and 75 percent of their weight. This unprecedentedly high graphene composition means that the oft-praised electric and mechanical properties of graphene might soon find their way into all kinds of macroscopic 3D-printed creations, with important consequences for the electronics and biomedical fields (among many others).
All living organisms – human, animal, or otherwise – continuously move molecules around their cells. It's a crucial mechanism of life, vital for feeding cells the proteins they need to function. And now scientists at Northwestern University have created a machine that mimics this pumping mechanism. Their molecular pump is the world's first such machine developed entirely through chemical engineering in the laboratory, and it could one day power artificial muscles and other molecular machines.