For the first time, physicists have witnessed something incredibly exciting: electrons forming whirlpools just like a fluid.
Take water, for example. Water molecules are individual particles, but they travel as one according to the principles of fluid dynamics, carrying each other across a surface, making streams and whirlpools as they go.
It's long been predicted that within special materials at near-zero temperatures, these interferences should disappear allowing the electrons to move like a fluid… but the problem was no one had actually been able to prove this was the case, until now. They then etched a pattern into a central channel with a circular chamber on either side, creating a 'maze' for an electrical current to run through. They etched the same pattern on flakes of gold, which doesn't have the same ultra-clean properties as the tungsten ditelluride and therefore acted as a control.
After cooling the material to around -269 degrees Celsius they ran an electrical current through it and measured the flow at specific points throughout the material, to map how the electrons were flowing.In the gold flakes, the electrons flowed through the maze without changing direction, even when the current had passed through each side chamber before coming back to the main current.
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