The invisibility cloak - the stuff of movies from Harry Potter to Star Trek - may be one step closer to reality, after US scientists cloaked a three-dimensional object in free space. The invisibility cloak - the stuff of movies from Harry Potter to Star Trek - may be one step closer to reality, after US scientists cloaked a three-dimensional object in free space. An article posted on the website of London-based Institute of Physics said this is one step further than previous studies that were either theoretical or were limited to the cloaking of two-dimensional objects. In their study the researchers from the University of Texas at Austin used a method known as "plasmonic cloaking" -using artificial plasmonic metamaterials - to hide an 18-cm cylindrical tube from microwaves, the article said.... Read........Invisibility Cloak
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