The Sensation of Touching a Quantum Superfluid

Researchers have explored how it would feel to touch a quantum superfluid, specifically superfluid helium-3. At extremely low temperatures, helium can become a superfluid, flowing without losing kinetic energy. When touching a superfluid, it would feel like touching a 2D surface, with no sensation of the bulk fluid. The interaction would only occur with a 2D surface formed between the fingers and the superfluid, while the rest of the fluid remains passive. The study provides insights into the thermodynamic behavior of superfluid helium-3 and its two-dimensional nature.