Add Yahoo as a preferred source to see more of our stories on Google. There are many glorious science-based terms when it comes to surfing. We all talk about swells, of course, the underwater energy ...

The alternative text for this image may have been generated using AI. In this Letter, we experimentally demonstrate nonlinear optical negative refraction in thin metallic nanostructures. We use a ...

Negative refraction of elastic waves has been studied and experimentally demonstrated in three- and two-dimensional phononic crystals, but Bragg scattering is impractical for low-frequency wave ...