Physics for the first time achieved the production of liquid light” at room temperature, making this strange form of matter is more accessible than ever.
This matter — at the same time smartcache stuff with zero friction and viscosity and the type of condensate Bose-Einstein, sometimes described as the fifth state of matter that allows light to actually wrap around objects and corners, informs Rus.Media.
Ordinary light behaves like a wave and sometimes as particle, always traveling in a straight line. That is why we can’t see what is around corners or objects. But in extreme conditions, light can behave like a liquid and flow around the objects.
Condensates Bose-Einstein physicists interesting that in this condition the rules change from classical to quantum physics and matter becomes more wave-like properties. They are formed at temperatures close to absolute zero, and only exists for fractions of a second.
However, in the new study, researchers announced the creation of a condensate of Bose-Einstein at room temperature, using “frankensteined” combination of light and matter.
The flow of polaritons, nastoschyaie obstacle in superfluid (top) and podlinnom (bottom) conditions.
“An unusual observation in our work is that we showed how superfluidity can also occur at room temperature in ambient conditions using particles of light and matter waves,” says lead researcher Daniel Sanvitto from the Italian CNR Institute of nanotechnology NANOTEC.
To create polaritons needed serious equipment, and nanoscale engineering. Scientists have laid a 130-nanometer layer of organic molecules between two ultraselective mirrors and the laser pulse of 35 femtoseconds (one femtosecond is quadrillion seconds).
“Thus we can combine the properties of photons, such as their swetina mass and high speed, with strong interactions due to protons within the molecules,” says Stephane Kena-Cohen from Ecole Polytechnique of Montreal.
In the resulting “Severini” was very unusual properties. Under standard conditions the fluid is at a current creates ripples and swirls. However, in the case of Severino things are different. As shown in the image above, typically the flow of polaritons is broken like waves but not svergina:
“In svergina this turbulence is not suppressed around obstacles, allowing the flow to continue on its way unchanged,” explains Ken Cohen.
The researchers argue that the results open new possibilities not only for quantum hydrodynamics, but also polariton devices at room temperature for future technologies — for example, for the production of superconducting materials to solar cells and lasers.