Physics
Metamaterial Antennas for Beam Steering and Cloaking
Quick fact
Metamaterials can have a negative refractive index, a property not found in any natural material, which can bend waves in ways that seem to reverse the laws of optics.
Why this is interesting
Imagine an antenna that can bend light or radio waves around an object, making it invisible, or steer a signal without any moving parts. That's the promise of metamaterials—materials that twist the rules of electromagnetism.