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Evgenii Narimanov and Mikhail Noginov and colleagues at Norfolk State University in Virginia have now created such a perfectly black metamaterial. It consists of silver wires 35 nanometres in diameter, embedded in 1-centimetre squares of aluminium oxide, 51 micrometres thick.
The team tested their handiwork by illuminating polished and roughened versions of the material with near-infrared radiation at a wavelength of around 900 nanometres, just beyond the red end of the visible spectrum. With the radiation hitting the material at an angle less than 45 degrees from the perpendicular, they found that 20 per cent of it was reflected if the surface was polished, though the proportion dropped to less than 1 per cent if it was roughened.
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Brian Wang is a Futurist Thought Leader and a popular Science blogger with 1 million readers per month. His blog Nextbigfuture.com is ranked #1 Science News Blog. It covers many disruptive technology and trends including Space, Robotics, Artificial Intelligence, Medicine, Anti-aging Biotechnology, and Nanotechnology.
Known for identifying cutting edge technologies, he is currently a Co-Founder of a startup and fundraiser for high potential early-stage companies. He is the Head of Research for Allocations for deep technology investments and an Angel Investor at Space Angels.
A frequent speaker at corporations, he has been a TEDx speaker, a Singularity University speaker and guest at numerous interviews for radio and podcasts. He is open to public speaking and advising engagements.