Scientists develop 3D, continuously multidirectional cloaking device

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The multidirectional “perfect paraxial” cloak bends light around the hand to show the grid on the wall.

Two University of Rochester scientists have taken invisibility cloaking back to basics. Their novel arrangement of four standard, off-the-shelf lenses keeps an object hidden (and the background undisturbed) as the viewer moves up to several degrees away from the optimal viewing angle. (Video)

 

 

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3D acoustic cloak makes objects undetectable with sound

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The geometry of the plastic sheets and placement of the holes interact with sound waves to make it (and objects beneath it) appear as if they are not there.

Duke University engineers have demonstrated the world’s first three-dimensional acoustic cloak using a few perforated sheets of plastic and extensive computation. The new device reroutes sound waves to create the impression that both the cloak and anything beneath it are not there. (Video)

 

 

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UT Austin researchers create an ultrathin invisibility cloak

 Bulky devices are an obvious flaw for those interested in Harry Potter-style applications.

Invisibility cloaks put forward by scientists have been fairly bulky devices, until now.  University of Texas at Austin researchers have now developed a cloak that is just micrometers thick and can hide three-dimensional objects from microwaves in their natural environment, in all directions and from all of the observers’ positions.

 

 

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