Rats were exposed to room light and fitted with contact lenses, one shown here, that allowed the green spectrum wavelength to pass through the lenses. (Photo: Bob Demers/UANews)

Chronic pain afflicts over 100 million people across the US. But now researchers at the University of Arizona have found promise in a novel, non-pharmacological approach to managing chronic pain – treating it with green light-emitting diodes (LED). In the study, rats with neuropathic pain that were bathed in green LED showed more tolerance for thermal and tactile stimulus than rats that were not bathed in green LED. In both cases no side effects from the therapy were observed, nor was motor or visual performance impaired. The beneficial effects lasted for 4 days after the rats’ last exposure to the green LED...

Conceptual diagram showing a nanofiber mesh incorporating vitamin B12 and its application to treat a peripheral nerve injury. Credit: Image courtesy of National Institute for Materials Science (NIMS)

A NIMS-Osaka University joint team developed a mesh which can be wrapped around injured peripheral nerves to facilitate their regeneration and restore their functions. This mesh incorporates vitamin B12 – vital to the normal functioning of nervous systems – which is very soft and degrades in the body. When the mesh was applied to injured sciatic nerves in rats, it promoted nerve regeneration and recovery of motor and sensory functions. The team is currently considering clinical application of the mesh to treat peripheral nerve disorders such as carpal tunnel syndrome (CTS).

Artificial nerve co...

A carbon fiber composite ink extrudes from a customized direct ink writing (DIW) 3D printer, eventually building part of a rocket nozzle.

Lawrence Livermore National Lab researchers have become the first to 3D print aerospace-grade carbon fiber composites, opening the door to greater control and optimization of the lightweight, yet stronger than steel material. The research represents a “significant advance” in the development of micro-extrusion 3D printing techniques for carbon fiber. “The mantra is ‘if you could make everything out of carbon fiber, you would’ – it’s potentially the ultimate material,” explained Jim Lewicki, principal investigator. “It’s been waiting in the wings for years because it’s so difficult to make in complex shapes...

In the heart of an active galaxy, matter falling toward a supermassive black hole generates jets of particles traveling near the speed of light. Image Credit: NASA’s Goddard Space Flight Center Scientific Visualization Studio

When the universe was young, a supermassive black hole – bloated to the bursting point with stupendous power – heaved out a jet of particle-infused energy that raced through the vastness of space at nearly the speed of light. Billions of years later, a trio of Clemson University scientists, led by College of Science astrophysicist Marco Ajello, has identified this black hole and 4 others similar to it that range in age from 1.4 billion to 1.9 billion years old...