![Prototype of disordered anomalous topological insulator](https://www.epfl.ch/labs/lwe/wp-content/uploads/2021/09/front-1-768x432.jpg)
We use topology, the mathematics of continuous transformations, to build new wave devices with unprecedented robustness against fabrication imperfections, impedance mismatches or phase disorder.
![](https://www.epfl.ch/labs/lwe/wp-content/uploads/2024/07/Wave-momentum_shaping3-768x432.png)
We research how to shape the momentum of sound to move small objects in challenging environments, such as inhomogeneous or dynamic media.