research

Nonlinear chains & lattices

We study intrinsically nonlinear mechanical structures, primarily governed by geometric nonlinearities: pendulum chains, rotor lattices, and rotational mechanical metamaterials. These systems are ideal platforms for exploring a rich variety of nonlinear wave phenomena, including soliton propagation, extreme wave events, and dynamical instabilities such as gradient catastrophes and modulational instabilities. Their highly controllable, architected nature makes them well-suited not only for observing these phenomena, but also for actively controlling them.

Multistable structures

We design multistable structures consisting of assemblies of bistable elements, typically buckled beams. Our work spans from the dynamics of a single unit cell — snap-through of a simple arch, dynamics of a doubly-clamped arch under forcing — to the collective dynamics of various assemblies. These allow us to address problems of nonlinear wave propagation (transition waves, cnoidal waves), energy dissipation, and information writing and storage.

Elastic kirigamis

We study elastic kirigamis — plates with cuts of various shapes that can soften the structure, create resonators, and more broadly modify wave propagation. Their laser-cut fabrication makes sample production straightforward. Phenomena of interest range from bandgap formation and lens-effect focusing to acoustic black hole analogues.

Out-of-equilibrium structures

We have initiated work on spatio-temporal metamaterials, which introduce atypical dispersive effects and raise open stability questions. In parallel, through a collaboration with the University of Liège, we are investigating active structures made of self-propelled elements connected by mechanical links, giving rise to emergent collective dynamics.