22-23-317
Cyrille Hamon (CNRS, LPS, Université Paris-Saclay)
ABSTRACT
My research focuses on metamaterials, assemblies of nanoparticles (NPs) capable of controlling light. For a long time, these systems have remained static, limiting their applications. My goal is to develop dynamic metamaterials by exploiting geometric frustration and colloidal interaction in NP assemblies. By tuning the shape of the NPs and the forces between them, it becomes possible to create inherently unstable structures that are sensitive to small perturbations and therefore reconfigurable. We have recently demonstrated that it is possible to obtain ordered and reconfigurable architectures in solution. These results overcome several obstacles: simplifying the fabrication processes of metamaterials, stabilizing frustrated states, and characterizing these transformations in situ. They pave the way for adaptive functional materials with applications in photonics and sensing.
