➀ Researchers from the University of Tokyo have developed a technique to locate hydrogen in nanofilms using a combination of ion channeling and Nuclear Reaction Analysis (NRA).; ➁ The technique has been used to study titanium hydride nanofilms, revealing hydrogen atom locations in relation to deuterium atoms and their influence on material properties.; ➂ The study may lead to advancements in hydrogen storage, solid electrolytes, and heterogeneous catalysis, contributing to practical and safe green solutions for the future.