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Sonomaglev: Combining acoustic and diamagnetic levitation

Hunter-Brown, George; Sampara, Naresh; Scase, Matthew M.; Hill, Richard J.A.

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George Hunter-Brown

Naresh Sampara


Acoustic levitation and diamagnetic levitation are experimental methods that enable the contact-free study of both liquid droplets and solid particles. Here, we combine both the techniques into a single system that takes advantage of the strengths of each, allowing for the manipulation of levitated spherical water droplets (30 nl-14 μl) under conditions akin to weightlessness, in the laboratory, using a superconducting magnet fitted with two low-power ultrasonic transducers. We show that multiple droplets, arranged horizontally along a line, can be stably levitated with this system and demonstrate controlled contactless coalescence of two droplets. Numerical simulation of the magnetogravitational and acoustic potential reproduces the multiple stable equilibrium points observed in our experiments.


Hunter-Brown, G., Sampara, N., Scase, M. M., & Hill, R. J. (2023). Sonomaglev: Combining acoustic and diamagnetic levitation. Applied Physics Letters, 122(1), Article 014103.

Journal Article Type Article
Acceptance Date Dec 21, 2022
Online Publication Date Jan 5, 2023
Publication Date Jan 5, 2023
Deposit Date Jan 6, 2023
Publicly Available Date Jan 6, 2023
Journal Applied Physics Letters
Print ISSN 0003-6951
Electronic ISSN 1077-3118
Publisher AIP Publishing
Peer Reviewed Peer Reviewed
Volume 122
Issue 1
Article Number 014103
Keywords Physics and Astronomy (miscellaneous)
Public URL
Publisher URL
Additional Information Received: 2022-11-09; Accepted: 2022-12-21; Published: 2023-01-05


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