We would like to acknowledge Alba NICOLAS-BOLUDA (Paris), Mathieu VARACHE (Cardiff, UK) and Jonathan LAVAUD (Grenoble) for their action at SFNano-JC2 during the last 4 years, and to welcome Ghadir KALOT (Grenoble), Christophe DELEHEDDE (Orléans), and Milad BAROUD (Angers).