Researchers create Ultra-Thin ‘Invisibility Cloak’

Researchers create Ultra-Thin ‘Invisibility Cloak’

A team of researchers at the University of California, Berkeley, has successfully created an ultra-thin ‘invisibility cloak’ which they claimed is flexible enough to be wrapped around an object of any shape.

According to a study published in Science, the ultra-thin invisibility cloak is layered with several thousands of nanoscale dots that alter any reflected light to make the object under the cloak appear flat.

Ziang Zhang, maker of the cloak, said that it is the first time when they‘ve done arbitrary shape cloaking. Invisibility cloak works by bending light around any object to make them undetectable, according to NBC News.

Usually, the materials used to make these cloaks are typically hard to shape and only work from narrow angles. If one walks wearing the cloak, it gets visible.

But Zhang’s cloak avoids that problem as it has a level of thinness and flexibility that allows it to fit around objects of any shape.

Researchers, in order to create the cloak, used a 50-nanometer-thick layer of magnesium fluoride, which is then coated with tiny, gold antennas that are each 30 nanometers thick. Each antenna ranges in size, between 30 to 200 nanometers long and 90 to 175 nanometers wide.

The cloak can make objects appear flat, but soon it destroys the illusion. Some more advancement is needed to be made to create a true ‘invisibility cloak’ that would allow humans to move around completely undetected, said researchers.

Zhang said, “One application might be in cosmetics. You can imagine if someone has a fat belly, like me, and he wants to look nice, he could put this layer on and it will look like a six pack”.

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