Research

Topological Waves

We use topology, the mathematics of continuous transformations, to build new wave devices with unprecedented robustness against fabrication imperfections, impedance mismatches or phase disorder.

Acoustic micromanipulation

We research how to shape the momentum of sound to move small objects in challenging environments, such as inhomogeneous or dynamic media.

Wave-based artificial intelligence

We develop physical neural networks with highly efficient training and inference capabilities.

Ultracompact microwave devices

We use subwavelength spatial dispersion to produce a wide range of components, from integrated filters to antenna arrays, over small footprints and with increased energy efficiency.

Electroacoustic resonators

We use loudspeakers membranes as actively tunable resonators, for example to make them absorb the acoustic energy over a broad frequency range.

(Electro)acoustic metamaterials

Acoustic metamaterials and metasurfaces are engineered structures composed of ducts, cavities, resonators and membranes, allowing manipulating the acoustic wave propagation properties towards anomalous phenomena such as negative refraction. Applying active electroacoustic resonators as unit-cells further allows adjusting and re-configuring on the fly their extraordinary acoustic properties.

Signal processing for acoustics

We develop signal processing for acoustic and audio, especially in the frame of spatial sound reproduction for 3D sound rendering systems and for hearing-aid instruments.

Machine Learning for acoustics

Radio-frequency integrated circuits

We develop tiny RF chips for telecommunication applications.