A material with a negative index of refraction could potentially be used to make superlenss capable or imaging objects at resolutions far below the wave length of light that’s shone on them. But the ability to control both components of light also offers other possibilities. Meta-atoms designed to act on both the electric and magnetic components of radiation equally, for example, could be used to create an
“Invisibility cloak” that works on the naked eye, steering light so that an object can be hidden from view.