Posted on 02/25/2018 8:20:33 AM PST by BenLurkin
Researchers create a hyperbolic metasurface on which light propagates with completely reshaped wafefronts
Light waves usually disperse in cirular or convex wavefronts form, like ripples on water surface created by a stone. But now researchers have found that it is possible to alter light's wavefronts and to give them a completely new shape.
To observe the waves as they propagate along the metasurface, researcher created a surface based on boron nitride. The material was selected because it has the ability to manipulate infrared light on extremely small length scales and it requires an extremely precise structuring on the nanometer scale to fabricate altered wavefronts. Then, researchers placed an infrared gold nanorod onto the metasurface, which acted like a stone dropped into water.
By using state-of the-art infrared nanoimaging technique, researchers were able to capture the waves.
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Researchers suggest that the same method can also be applied to other materials, which could pave the way for better sensing and signal processing optical devices.
(Excerpt) Read more at i4u.com ...
Tollbooth to infinity on the hyperspace lanes.
Traveling at The Speed of Dark!
But will it out shine the Tac Light?
(Here are a bunch of people who "see the light" already.)
Does that mean well have to walk on our hands now to see things correctly, or do we just get used to it?
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Both, but be sure your surf board is waxed ...
Big deal. I’ve turned light upside down dozens of times; the problem is the bulb won’t screw into the socket and, as a result, upside down light is pretty dark.
The way I figure it, it's just Magneto-Electrical Radiation. That's not upside-down; it's sideways.
Scientists Turn Light Upside Down
Sailors turned over a table.
Big deal.
I saw a caterpillar turn over a new leaf. Caterpillars are big into change, you know.
Well, if that caterpillar was about to get eaten by a bird, then he butterfly away.
Move over klingon cloaking devices...
This technology seems related to the metamaterials that have a negative index of refraction for microwaves. If so one for visible light is almost here.
I have no idea what any of this means.
Not surpised that there are FReepers who do.
A meta material is one where the way molcules are arraigned are what is important. Opal is a natural metamaterial.It's composed of silica spheres 150 to 300 nm in diameter stacked like oranges at a supermarket.
Since this is close to the natural wavelength of visible light it plays with that light giving an opal an almost magical fire.
Man made meta materials promises magic we do not see naturally.
Hence the term opalescent. Interesting!
Whatever it was, it took a lot of liquid therapy to re-cage my gyro.
Researchers suggest that the same method can also be applied to other materials, which could pave the way for better sensing and signal processing optical devices.
...
That would be great if there’s a practical application.
A meta material is one where the way molcules are arraigned are what is important. Opal is a natural metamaterial.It's composed of silica spheres 150 to 300 nm in diameter stacked like oranges at a supermarket.
Since this is close to the natural wavelength of visible light it plays with that light giving an opal an almost magical fire.
Man made meta materials promises magic we do not see naturally.
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