Acoustic Radiation Pressure

nonlinear acoustics, ultrasound, interface shaping, numerical, experimental, interface deformation

Resume

Acoustic radiation pressure (ARP) enables the exertion of a steady force on fluid interfaces or particles using focused ultrasound waves. This nonlinear effect allows for contactless deformation and manipulation of fluids and soft materials, opening new possibilities in material characterization and actuation.

In this research topic, we develop experimental and numerical methods to characterize the spatiotemporal deformation of fluid–air interfaces induced by ARP. Understanding these dynamics is key for applications in sensing, microfluidics, and soft matter manipulation.

Deformation induced at a water-air interface by the ultrasound (Credits: F. Sisombat)

Previous Works

During his PhD thesis (2020-2023), Félix Sisombat proposed detailed experimental setups combined with numerical modeling to investigate the transient and steady deformation of water–air interfaces under ultrasonic excitation.

A drop tries to escape the acoustic radiation force (Credits: F. Sisombat)

Related articles:

[A4] F. Sisombat, T. Devaux, L.Haumesser, and S. Callé, Contactless deformation of fluid interfaces by radiation pressure. Sci Rep 13, 14703 (2023).

[A3] F. Sisombat, T. Devaux, L.Haumesser, and S. Callé , Water–air interface deformation by transient acoustic radiation pressure, Journal of Applied Physics 132, 174901 (2022) Selected as Journal Cover

A beating heart generated by acoustic radiation pressure (Credits: F. Sisombat)