Funhouse mirrors just got a whole lot wackier. Reflective surfaces built using the principles behind invisibility cloaks could bounce light at strange angles, or make a mirror that turns into a window depending on the light in the room.
Invisibility cloaks, capable of hiding objects by bending light around them, are just one of the fantastic-sounding promises of metamaterials – which have complex internal structures that allow them to manipulate light. Viktar Asadchy of Aalto University in Finland and his colleagues realised they could apply the principles to mirrors, creating a metamirror.
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