Metamaterials are artificial composite materials composed of at least two different materials. They possess a large number of ...

As expected, the waves can only travel in one direction” Image source: Nicolas Noiray / ETH Zurich The researchers made this new discovery by improving upon a 2014 design from the University of ...

In brief Sound and other waves usually propagate equally forwards and backwards. Researchers have now developed a method that prevents sound waves from travelling backwards without deteriorating their ...

There are seven groups of the electromagnetic spectrum. To the left of the electromagnetic spectrum are radio waves, the lowest frequency form of radiation with the longest wavelengths.

There have been attempts to cloak an object from 𝐻𝑧 - polarized electromagnetic waves and sound waves, but it has been difficult to achieve satisfactory high performance. Associate Professor ...

"Blocking radio waves and electromagnetic interference with the flip of a switch." ScienceDaily. ScienceDaily, 16 January 2023. <www.sciencedaily.com / releases / 2023 / 01 / 230116112540.htm>.