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New metamaterial allows negative refraction index

By Damir Beciri
One Comment16 June 2013

dionne-invisibleAlthough metamaterials managed to revolutionize optics in the past decade, their performance so far has been inhibited by their inability to function over broad bandwidths of light. Stanford engineers have designed a broadband metamaterial that more than doubles the range of wavelengths of light that can be manipulated. With adjustments, the researchers believe it could… »

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Unidirectional invisibility cloak for microwaves gets improved

By Damir Beciri
15 November 2012

landy-microwave-invisibility-cloakDuke University’s Pratt School of Engineering researchers perfected an old research related to their “invisibility cloak” by incorporating a modification to the device‚Äôs design. Although the new design still functions in one plain (it is unidirectional), it solves one of the major flaws of the original device. These new improvements could be used to change… »