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  1. No Access

    Article

    Dissociation reaction of the 1/3 \( \left\langle {\bar{1}101} \right\rangle \) edge dislocation in α-Al2O3

    It has been reported that dislocations with 1/3 \( \left\langle {\bar{1}101} \right\rangle \) ...

    Eita Tochigi, Teruyasu Mizoguchi, Eiji Okunishi… in Journal of Materials Science (2018)

  2. Article

    Open Access

    Material structure, properties, and dynamics through scanning transmission electron microscopy

    Scanning transmission electron microscopy (STEM) has advanced rapidly in the last decade thanks to the ability to correct the major aberrations of the probe-forming lens. Now, atomic-sized beams are routine, e...

    Stephen J. Pennycook, Changjian Li… in Journal of Analytical Science and Technolo… (2018)

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  3. No Access

    Article

    Surface evolution of a Pt–Pd–Au electrocatalyst for stable oxygen reduction

    Core–shell nanocatalysts have demonstrated potential as highly active low-Pt fuel cell cathodes for the oxygen reduction reaction (ORR); however, challenges remain in optimizing their surface and interfacial s...

    Jian Li, Hui-Ming Yin, **-Bo Li, Eiji Okunishi, Yong-Li Shen, Jia He… in Nature Energy (2017)

  4. No Access

    Article

    Detection of photons emitted from single erbium atoms in energy-dispersive X-ray spectroscopy

    The detection of photons emitted from single quantum objects is highly desirable for the diagnosis of nanoscale devices using microscopes. An extremely tiny probe (∼0.1 nm) with high current recently became av...

    Kazu Suenaga, Toshiya Okazaki, Eiji Okunishi, Syo Matsumura in Nature Photonics (2012)

  5. No Access

    Article

    Direct observation of an ordered arrangement of vacancies and large local thermal vibration in rhenium silicide byCs-corrected STEM

    The crystal structure of thermoelectric rhenium silicide with an ordered arrangement of vacancies is investigated by utilizing spherical aberration (Cs) corrected scanning transmission electron microscopy (STEM) ...

    Shunta Harada, Katsushi Tanaka, Kyosuke Kishida… in MRS Online Proceedings Library (2011)

  6. No Access

    Article

    Direct imaging of hydrogen-atom columns in a crystal by annular bright-field electron microscopy

    The resolution of electron microscopy has increased through the years, and scientists have been able to measure progressively lighter elements. The ultimate goal has now been reached with the imaging of hydrog...

    Ryo Ishikawa, Eiji Okunishi, Hidetaka Sawada, Yukihito Kondo… in Nature Materials (2011)

  7. No Access

    Article

    Identification of active atomic defects in a monolayered tungsten disulphide nanoribbon

    Edge structures and atomic defects can significantly affect the physical and chemical properties of low-dimensional materials, such as nanoribbons, and therefore merit a thorough investigation at the atomic sc...

    Zheng Liu, Kazu Suenaga, Zhiyong Wang, Zu** Shi, Eiji Okunishi… in Nature Communications (2011)

  8. No Access

    Article

    Aging behavior of Cu–Ti–Al alloy observed by transmission electron microscopy

    Aging behavior of Cu–3 at.%Ti–4 at.%Al alloy at 723 K has been examined from mechanical, electrical, and microstructural points of view. Compared with binary Cu–3 at.%Ti alloy, the electrical conductivity impr...

    Toyohiko J. Konno, Rimi Nishio, Satoshi Semboshi… in Journal of Materials Science (2008)