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52 results

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  • Direct atomistic defect observations by depth sectioning and dynamic STEM
  • Ryo Ishikawa, Naoya Shibata, Yuichi Ikuhara
  • Journal: Microscopy and Microanalysis / Volume 27 / Issue S1 / August 2021
  • Published online by Cambridge University Press: 30 July 2021, pp. 2138-2139
  • Print publication: August 2021
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  • Insights into fundamental deformation processes from advanced in situ transmission electron microscopy
  • Erdmann Spiecker, Sang Ho Oh, Zhi-Wei Shan, Yuichi Ikuhara, Scott X. Mao
  • Journal: MRS Bulletin / Volume 44 / Issue 6 / June 2019
  • Published online by Cambridge University Press: 11 June 2019, pp. 443-449
  • Print publication: June 2019
  • View abstract

    In situ nanomechanical testing in (scanning) transmission electron microscopy provides unique opportunities for studying fundamental deformation processes in materials. New insights have been gained by combining advanced imaging techniques with novel preparation methods and controlled loading scenarios. For instance, by applying in situ high-resolution imaging during tensile deformation of metallic nanostructures, the interplay of dislocation slip and surface diffusion has been identified as the key enabler of superplasticity. Evidence for dislocation pinning by hydrogen defect complexes has been provided by in situ imaging under cyclic pillar compression in a tunable gas environment. And, for the very first time, individual dislocations have been moved around in situ in two-dimensional materials by combining micromanipulation and imaging in a scanning electron microscope.

  • Surface and Electric Field Imaging by Newly Designed Atomic-Resolution STEM
  • Ryo Ishikawa, Naoya Shibata, Yuichi Ikuhara
  • Journal: Microscopy and Microanalysis / Volume 24 / Issue S1 / August 2018
  • Published online by Cambridge University Press: 01 August 2018, pp. 118-119
  • Print publication: August 2018
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  • Better Contrast for Imaging Defects by ABF
  • Peng Gao, Ryo Ishikawa, Bin Feng, Naoya Shibata, Yuichi Ikuhara
  • Journal: Microscopy and Microanalysis / Volume 23 / Issue S1 / July 2017
  • Published online by Cambridge University Press: 04 August 2017, pp. 480-481
  • Print publication: July 2017
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  • Interface and Surface Local Atomic Structures of Lithium Ion Battery Oxides
  • Yuichi Ikuhara
  • Journal: Microscopy and Microanalysis / Volume 23 / Issue S1 / July 2017
  • Published online by Cambridge University Press: 04 August 2017, pp. 1594-1595
  • Print publication: July 2017
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