Friday, January 27, 2017
Absorbing Electromagnetic Energy While Avoiding the Heat
Electrical engineers at Duke University have created the world's first electromagnetic metamaterial made without any metal. The device's ability to absorb electromagnetic energy without heating up has direct applications in imaging, sensing and lighting.
The researchers then manufactured a prototype consisting of hundreds of these optimized cylinders aligned in rows on a flat surface. Physical tests showed that the new "metasurface" absorbed 97.5 percent of the energy produced by waves at 1.011 terahertz.