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Updated: Jan 12, 2026

Fabrication, Operation and Flow Visualization in Surface-acoustic-wave-driven Acoustic-counterflow Microfluidics

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Nanofluidic logic based on chiral skyrmion flows.

Xichao Zhang¹, Jing Xia², Yan Zhou³

¹Department of Applied Physics, Waseda University, Shinjuku-ku, Tokyo 169-8555, Japan.

Proceedings of the National Academy of Sciences of the United States of America

|October 31, 2025

Summary

Chiral magnetic skyrmions flowing in nanofluidic pipelines perform logic operations. This approach simplifies skyrmion logic by using fluid dynamics, reducing the need for single skyrmion manipulation.

Keywords:

logic computing logic gates nanofluidics skyrmions spintronics

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Area of Science:

Spintronics
Nanofluidics
Computational physics

Background:

Chiral magnetic skyrmions exhibit fluid-like behavior in nanotracks.
Performing logic operations using interacting flows is crucial for microfluidics and nanofluidics.

Purpose of the Study:

To develop a basic nanofluidic logic computing system using chiral magnetic skyrmions.
To explore the manipulation of skyrmion flow behavior for logical operations.

Main Methods:

Utilizing skyrmions flowing in parallel pipelines connected by an H-shaped junction.
Manipulating skyrmion flow via the spin polarization angle to control the skyrmion Hall angle.

Main Results:

Demonstrated fluidic logic operations within a specific range of spin polarization angles.
Achieved fully developed skyrmion flows capable of performing logic functions.
Significantly reduced complexity compared to single skyrmion logic systems.

Conclusions:

Chiral magnetic skyrmion flows can perform logic operations in a simplified nanofluidic system.
This method bypasses the need for deterministic creation, precise control, and detection of individual skyrmions.
The chiral flow behavior of magnetic quasiparticles offers potential for novel spintronic and nanofluidic applications.