Invisibility Cloak for Earthquakes

Neat. [Link]

Borrowing from the physics of invisibility cloaks could make it possible to hide buildings from the devastating effects of earthquakes, say physicists in France and the UK.

The “earthquake cloak” idea comes from the team led by Stefan Enoch at the Fresnel Institute in Marseille, France. They were the first to show that the physics of invisibility cloaks could have other applications – designing a cloak that could render objects “invisible” to destructive storm waves or tsunamis. …

The new theoretical cloak comprises a number of large, concentric rings made of plastic fixed to the Earth’s surface. The stiffness and elasticity of the rings must be precisely controlled to ensure that any surface waves pass smoothly into the material, rather than reflecting or scattering at the material’s surface.