David Kirkpatrick

August 14, 2009

Invisibility cloak tech creates fake portal

Via KurzweilAI.net — Here’s the latest news on invisibility cloaktechnology, a longtime favorite subject for this blog.

A lot of this stuff is really getting deeper and deeper into the world of science fiction as science fact. Of course, I’m still waiting to see a convincing real-world demonstration of the basic cloaking technology touted the last few years, so maybe all this news remains in the world of fiction. Either way, it’s a fun topic.

Beyond the looking glass…
PhysOrg.com, Aug. 13, 2009

A “hidden portal” invisibility cloak may be possible using exotic new single-crystal yttrium-iron-garnet ferrite metamaterials that force light and other forms of electromagnetic radiation in complicated directions, researchers from the Hong Kong University of Science and Technologyand Fudan University have found.

People standing outside the portal would see something like a mirror.

 
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May 14, 2009

Invisibility cloak, plus

Yep, news on invisibility cloaks  returns once again. This time with a twist — metamaterials that can go beyond a simple cloak of invisibility and actually create the illusion of a totally different object in place of the one being cloaked.

Via KurzweilAI.net:

Illusion Cloak Makes One Object Look like Another
The physics arXiv blog, May 13, 2009

Metamaterials could be used for an even more exotic effect than invisibility cloaks: to create the illusion that a different objectis present, Hong Kong University of Science and Technology researchers say.

 
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