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Community News - Mechanical cloaking
The application of coordinate transformations to mechanical waves has been limited due to the differences in the underlying mathematics, as compared to electromagnetics. Now, researchers at Karlsruhe Insitute of Technology have devised a way of visualising the effect of a transformation that allows them to implement it directly on a honeycomb-like structure, without the need for extensive computational expenditure. The research has been published in the Proceedings of the National Academy of Sciences.
Comments
Posted by
Analy
on
Mar 6th, 2016
That's very interesting! I wasn't aware of the plisibsoity of using gradient-index materials to reduce reflection I had only seen it used in gradient-index (GRIN) lenses (to make them flat) and graded-index optical fibers (to keep the light near the fiber core).In retrospect, I guess this makes perfect sense, since as you note, it's the limiting case of applying anti-relflective coatings.
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on
Mar 19th, 2016
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Posted by
Buffy
on
Mar 19th, 2016
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