We are pleased to present our work at the Journées de la Matière Condensée (JMC) in Marseille in the "NN2 - Mechanics at the nano-scale" mini-symposium. Fatim-Zahra Mouhib will present her work on Understanding dislocation - grain boundary interactions by quasi in-situ nanoindentation and electron channeling imaging at the example of a tensile twin boundary in MgY, on Oct. 30th. Yen Fred Woguem will present his work on The role of grain boundaries on plasticity in hexagonal crystals: an atomistically informed discrete dislocation dynamic study, on Oct. 31st.