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Physicists at Chalmers University discover why it is impossible to increase the speed limit of light
(which, according to Einstein's theory of special relativity, is set at 186,000 miles per second.)
(including visible light) is crucial for most modern gadgets.
In recent years, scientists have developed artificial specialty materials that help control the properties of light with a high degree of accuracy.
which can change the color or intensity of light. When they are applied to Internet traffic, these switches can be turned on or off up to 100 billion times per second. In addition, the speed can not be increased.
"Researchers were hoping to reach higher speeds in optical switches by developing optomechanical metamaterials," says Sophie Viaene, a researcher in nanophotonics at Chalmers. "We now know why these materials have failed to supplant existing technologies in Internet traffic and mobile communication networks."
Actually, I'm not sure we're doing it.
What we do know is that it is sometimes necessary
As described in Viaene's thesis, the interaction with light can be controlled more effectively by manipulating a particle at both (instead of the whole surface). Another solution is to leave the specialty material in constant motion at a constant speed and to measure variations.
Such restrictions, however, are not applicable to all transactions.
"The switching speed limit is not a problem in applications where we see light, because our eyes do not react so quickly," said Philippe Tassin, director of Viaene, in a statement . "We see great potential for optomechanical metamaterials in the development of thin and flexible gadgets for interactive visualization technology."
Complete results were recently published in the journal Physical Review Letters
Optomechanical Metamaterials Researchers at Northwestern University have developed design principles for making photonic crystals bound by synthetic DNA.
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