‘Antimagnet’ joins list of invisibility approaches

Researchers have designed a “cloak” that is invisible to magnetic fields both coming in and coming out.

The approach uses superconductor layers and the “metamaterials” familiar from recent invisibility cloak research.

Metamaterials are artificially designed materials designed to guide electromagnetic waves – like light or magnetic fields – in a way that natural materials do not.

It could thus find application in security or medical contexts, such as those surrounding MRI scans.