The number of ways to harvest energy that would otherwise go unused and wasted is extraordinary. To cite a few of the many examples, there’s the heat given off during almost any physical or electronic ...

(Nanowerk Spotlight) Controlling how electromagnetic waves behave as they move through space is essential for technologies like wireless communication, radar, and remote sensing. Engineers have ...

A new approach to manufacturing multicolour lenses could inspire a new generation of tiny, cheap, and powerful optics for portable devices such as phones and drones. The design uses layers of ...

Researchers from China have created a prototype audio speaker add-on that uses the Koch fractal to mitigate sound differences. The fractal metasurface addresses the inherent directionality of car ...