Meteorite hunters who flocked to Detroit from across the U.S. after a meteor exploded are finding the fragments. The 6-foot-wide meteor broke apart Tuesday about 20 miles over Earth, NASA scientists said. Most of the fragments landed in Hamburg Township...Read More
Technique could lead to new classes of materials that can bend light, such as for those used in cloaking devices. Northwestern University researchers have developed a first-of-its-kind technique for creating entirely new classes of optical materials and devices that could lead to light bending and cloaking devices – news to make the ears of Star Trek’s Spock perk up. Using DNA as a key tool, the interdisciplinary team took gold nanoparticles of different sizes and shapes and arranged them in two and three dimensions to form optically active superlattices...Read More
Chris Packham, associate professor of physics and astronomy at The University of Texas at San Antonio (UTSA), has collaborated on a new study that expands the scientific community’s understanding of black holes in our galaxy and the magnetic fields that surround them. Packham and astronomers observed the magnetic field of a black hole within our own galaxy from multiple wavelengths for the first time.
Approach avoids lithium dendrite growth. “In current batteries, lithium is usually atomically distributed in another material such as graphite or silicon in the anode,” explains Northwestern University’s Jiaxing Huang. “But using an additional material ‘dilutes’ the battery’s performance. Lithium is already a metal, so why not use lithium by itself?” The answer is a challenge scientists have spent years trying to overcome. As lithium gets charged and discharged in a battery, it starts to grow dendrites and filaments, “which causes a number of problems,” Huang said. “At best, it leads to rapid degradation of the battery’s performance...Read More