First view of hydrogen at the metal-to-metal hydride interface

Three images of titanium hydride. Left: high-angle annular dark-field (HAADF). Middle: the new technique described in the paper, showing both titanium and hydrogen atoms (marked blue and red respectively)Right: Contrast-inverted annular bright-field Credit: deGraaf et al, University of Groningen

University of Groningen physicists have visualized hydrogen at the titanium/titanium hydride interface using a transmission electron microscope. Using a new technique, they succeeded in visualizing both the metal and the hydrogen atoms in a single image, allowing them to test different theoretical models that describe the interface structure. The results were published on 31 January in the journal Science Advances.

To understand the properties of materials, it is often vital to observe their structure at an atomic resolution. Visualizing atoms using a transmission electron…

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