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Resolving Hydrogen at Metal-metal Hydride Interfaces Using iDPC-STEM

Hydrogen plays an important role in materials science. For example, hydrogen can be stored safely with high volumetric density in metals, however, its absorption in metals can also have disastrous consequences due to hydrogen embrittlement. Yet, imaging hydrogen with scanning transmission electron microscopy has remained elusive, despite the very high spatial resolution that can be achieved nowadays. Here we show that hydrogen can be imaged with integrated differential phase contrast (iDPC) in an aberration corrected scanning transmission electron microscope (1).