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Related Experiment Video

Updated: Sep 24, 2025

Experimental Investigation of the Flow Structure over a Delta Wing Via Flow Visualization Methods

Experimental Investigation of the Flow Structure over a Delta Wing Via Flow Visualization Methods

Published on: April 23, 2018

Visualization of quantized vortex reconnection enabled by laser ablation.

Yosuke Minowa^1,2, Shota Aoyagi¹, Sosuke Inui³

¹Graduate School of Engineering Science, Osaka University, 1-3, Machikane-yama, Toyonaka, Osaka, Japan.

Science Advances

|May 4, 2022

Summary

This summary is machine-generated.

Dense silicon nanoparticles are attracted to quantized vortex cores in superfluid helium. This discovery offers a new way to visualize and study impurity-vortex interactions in quantum fluids.

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Last Updated: Sep 24, 2025

Experimental Investigation of the Flow Structure over a Delta Wing Via Flow Visualization Methods

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Direct Imaging of Laser-driven Ultrafast Molecular Rotation

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Published on: February 4, 2017

Area of Science:

Quantum Fluids
Nanomaterials
Superfluid Helium

Background:

Quantized vortices are key to impurity interactions in superfluid helium.
Interactions with dense materials (e.g., semiconductors, metals) remain poorly understood.

Purpose of the Study:

To investigate the interaction between dense silicon nanoparticles and quantized vortex cores.
To explore novel methods for visualizing impurity-vortex dynamics.

Main Methods:

In situ laser ablation to prepare silicon nanoparticles.
Observation of nanoparticle behavior within superfluid helium.
Analysis of quantized vortex structures and interactions.

Main Results:

Experimental evidence shows dense silicon nanoparticles are attracted to quantized vortex cores.
Silicon nanoparticles formed filament-like structures mirroring vortex cores.
Observed quantized vortex reconnection with dynamical scaling.

Conclusions:

Dense impurities interact with quantized vortex cores in superfluid helium.
Silicon nanoparticles can visualize quantized vortex cores and their dynamics.
This work opens new avenues for studying impurity-quantized vortex interactions.