Researchers Harness Black Metal to Turbocharge Solar Power
Several years ago, an optics expert developed a technique for turning shiny metals pitch black. The trick resulted in a material perfectly suited for absorbing sunlight—so much so that generators built with it produced 15 times more power than comparable devices. The team used black metal to develop a new design for solar thermoelectric generators. Known as STEGs, they can convert various types of thermal energy into electricity. However, technological limitations significantly curbed their pot