Congrats to Lucas Lethuillier on successfully defending his thesis! He is the fifth PhD student to graduate from the group. Special thanks to jury members Prof. Albrecht Berkessel, Prof. Jay Siegel, Dr. Sami Lahkdar, Prof. Nicolas Javahiraly, and our close collaborator Prof. Thomas Ebbesen for being part of the jury. A memorable pot de thèse followed featuring both of his grandmothers! Lucas has accepted a lucrative industrial postdoctoral contract to apply the findings of his thesis to problems of interest to a major chemical company.