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fliptop [soylentnews.org] writes:

Using a combination of Teflon and ceramic, electrical engineers at the University of California, San Diego have developed a drone cloaking device [homelandsecuritynewswire.com]:

The Teflon has a low refractive index, while the ceramic’s refractive index is higher, which allows light to be dispersed through the sheet without any absorption. Compared to an invisibility cloak, this technology has not only the ability to conceal, but the ability to increase optical communication signal speed and to collect solar energy.

DOD says [dodlive.mil] that the goal of this design is to create devices that make any object appear invisible by scattering the electromagnetic waves, such as light and radar, off the object, making it less detectable to these wave frequencies. Metamaterial that surrounds the target is able to force light to bypass a region of space, which effectively "cloaks" the object, making it isolated from incoming electromagnetic waves.

Related:
New “Corner Cloak” Directs Light Around Sharp Bends [soylentnews.org]
Scientists Design New Invisibility Cloak for US Military [occupycorporatism.com]

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