Scientists have found a way to create 'liquid light' easily

"Liquid light" is a superfluid - friction and viscosity of 0, and is a form of matter in the "Bose-Einstein condensate" (Bose-Einstein condensate or BEC).

1. Concussion conclusions: In addition to 3 solid, liquid, water gas, there is a fourth state

The liquid has the ability to flow around the object, filling all the gaps. Light is a wave form (sometimes acting like an atom), moving in a straight line and being blocked when encountering an obstacle.

The most fundamental difference between light and water is that light cannot bend on its own. This is the reason we cannot observe the two sides and the back of an object, as well as the obtuse corner.

But, in some extreme conditions, light can bend itself "flowing" around the object, which is like water. At that time, it was called "liquid light".

According to experts, they can create "liquid light" in the "Bose-Einstein condensate" (Bose-Einstein condensate or BEC) - where the laws of physics normally turn into quantum physics. . BEC is considered the fifth state of matter and only occurs when the temperature reaches "absolute zero" (0 degrees K or -273 degrees C), an extremely difficult condition.

But recently, experts from the Nano Institute of Technology CNR NANOTEC (Italy) have found a way to bring matter to BEC state in room temperature conditions. They can combine light and matter to create "liquid light" under normal conditions. This proves that superfluids can exist at room temperature, using light particles called photons.

However, the creation of photonic particles is quite complicated, requiring many tools to operate at the nanoscale. The researchers had to shoot at a 130nm thick layer of organic molecules that were "clamped" between two mirrors that reflected a powerful laser.

Difference between liquid (above) and superfluid (below).The liquid when blocked will form waves, while superfluid is not.

The successful creation of "liquid light" at temperatures has often paved the way for subsequent quantum hydraulic studies. In addition, photonic particles will be new elements to help future technology evolve, especially in light-related areas such as solar cells, LEDs or lasers.

The study is published in the journal Nature Physics.