The objectives of the “Groupement de Recherches” (GDR) NACRE (Nanocristaux dans des diélectriques pour l’électronique et pour l’optique) is to promote exchanges between researchers studying these nanomaterials, which applications belongs to electronics, opto-electronics, photonics and plasmonics, in order to support the emergence and to animate new inter-disciplinary collaborations at the national level.