A prototype "invisibility cloak" has been developed by European scientists

In their study, researchers from the German Karlsruhe Institute of Technology and Imperial College London used the cloak, made using photonic crystals with a structure resembling piles of wood, to conceal a small bump on a gold surface.
In their study, published Thursday in the American journal Science, they rendered almost entirely invisible the bump that measured 0.00004 inches high by 0.00005 inches across, by "cloaking" it in a new material.
Invisibility cloaks have already been developed but they only worked on two dimensions.
In other words, the objects that were supposed to be made invisible were immediately visible from the third dimension, the study said.
The "cloak" invented by the European team is the first to work on three dimensions.
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