Atomistic studies of helium trapping and diffusion at Ni–graphene interfaces Hai Huang, Xiaoxin Ge, Xu Yu, Yanxin Jiang and Qing Peng Eur. Phys. J. Plus, 140 6 (2025) 497 Published online: 06 June 2025 DOI: 10.1140/epjp/s13360-025-06447-1