A team of Chinese researchers has designed an acoustic cloak that can hide objects underwater. There's no word on when any of this will ever come to fruition of course, but we remain always hopeful. Making Things Acoustically Invisible Underwater.
In 2011, the effects of the Karlsruhe invisibility cloak are also visible to the bare eye. In 2010, Wegener and his team from KIT, Karlsruhe, presented their first 3D invisibility cloak. Chan, a scientistat The Hong Kong University of Science and Technology, believes that itis possible to create a cloaking device that would be able to render anobject invisible without. Pendry presented the theoretical idea of a carpet invisibility cloak. The new illusion-producing device would have to be capable of working without interfering with the invisibility cloak itself (which, if you recall, also can't properly be said to exist). In 2008, Jensen Li (City University of Hong Kong, China) and Sir John B. Theoretically, all of this is rather simple and quite sound, though it turns out that there are numberless mechanical obstacles standing in the way of producing such devices. So how does that work, exactly? Normal, every day invisibility cloaks bend light around a central cavity, whereas the team has now worked out mathematical rules for bending light in other ways, allowing a material to be designed to bend light in the exact way a spoon would, so that the light hitting the material would distort, making it look like a spoon was there. In order to realize the macroscopic objects invisible in the visible region, according to the law of refraction, total internal reflection law and symmetry. 2 8 Nanoscale Cloak Bringing Science Fiction into the 21st Century: Julia Abelsky at TEDxYouthTheBeltline Inspired by both her love of Harry Potter and fencing, a sport in which slashing and poking one’s opponent is possible, Northwestern student Julia Abelsky, who majored in both math and statistics, developed her nanoscale invisibility cloak. So, say you wanted to use an invisibility cloak to mask the presence of your bottle of beer on the table, the new concept - or 'shroud of lies' as we call it - would enable you to make it appear that there was a glass of water sitting there, in place of the beer.
Well, another chapter's been added to the tome: researchers at the Hong Kong University of Science and Technology have devised a way to extend the invisibility principle, allowing an illusion to sit in place of the invisible object. The ever-evolving tale of the invisibility cloak makes us want to hang our heads in our hands sometimes, so fraught with frustrations does it seem.
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