The Carbon Nanotubes Invisibility Cloak

Researchers from the University of Texas at Dallas have taken one step closer to creating the Invisibility Cloak à la Harry Potter. Instead of Demiguise hair, they use carbon nanotubes:

CNTs have such unique properties, such as having the density of air but the strength of steel, that they have been extensively studied and put forward for numerous applications; however it is their exceptional ability to conduct heat and transfer it to surrounding areas that makes them an ideal material to exploit the so-called “mirage effect”. [...]

Through electrical stimulation, the transparent sheet of highly aligned CNTs can be easily heated to high temperatures. They then have the ability to transfer that heat to its surrounding areas, causing a steep temperature gradient. Just like a mirage, this steep temperature gradient causes the light rays to bend away from the object concealed behind the device, making it appear invisible.

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