To understand how MXenes make a Faraday cage that can be switched on and off, first we must understand Faraday cages and shields themselves.

A Faraday cage or shield will do the trick. At times, though, it would be desirable to shield and unshield a device at will.

Faraday cage A Faraday cage is an enclosure used to block electromagnetic fields, such as cellphone signals. A variant of the Faraday cage is the Faraday shield, which can be created by ...

A Faraday cage can also be a mesh material, rather than perfectly solid. It's a complicated calculation, but in general if the diameter of the holes in the mesh are smaller than the wavelength of ...