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15 June 2020 Quantum vortex visualization in superfluid helium
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Proceedings Volume 11522, Optical Manipulation and Structured Materials Conference 2020; 115221B (2020)
Event: SPIE Technologies and Applications of Structured Light, 2020, Yokohama, Japan
Superfluid helium is an important model system to study quantum hydrodynamics. Numerous researches have been reported on fascinating phenomena including superfluidity, unusually low viscosity, and the emergence of the quantum vortex. Here, we demonstrated the visualization of the quantum vortices, which are intrinsically unable to be seen. We prepared many nanoparticles in superfluid helium by using the laser ablation technique. The fabricated nanoparticles are trapped at the core of the quantum vortices. By imaging the scattered light from the nanoparticles, we visualized the motion of the quantum vortices.
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Yosuke Minowa, Kensuke Kokado, Shota Aoyagi, and Masaaki Ashida "Quantum vortex visualization in superfluid helium", Proc. SPIE 11522, Optical Manipulation and Structured Materials Conference 2020, 115221B (15 June 2020);

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