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Multimodal x-ray and electron microscopy of the Allende meteorite.

  • Author(s): Lo, Yuan Hung;
  • Liao, Chen-Ting;
  • Zhou, Jihan;
  • Rana, Arjun;
  • Bevis, Charles S;
  • Gui, Guan;
  • Enders, Bjoern;
  • Cannon, Kevin M;
  • Yu, Young-Sang;
  • Celestre, Richard;
  • Nowrouzi, Kasra;
  • Shapiro, David;
  • Kapteyn, Henry;
  • Falcone, Roger;
  • Bennett, Chris;
  • Murnane, Margaret;
  • Miao, Jianwei
  • et al.
Abstract

Multimodal microscopy that combines complementary nanoscale imaging techniques is critical for extracting comprehensive chemical, structural, and functional information, particularly for heterogeneous samples. X-ray microscopy can achieve high-resolution imaging of bulk materials with chemical, magnetic, electronic, and bond orientation contrast, while electron microscopy provides atomic-scale spatial resolution with quantitative elemental composition. Here, we combine x-ray ptychography and scanning transmission x-ray spectromicroscopy with three-dimensional energy-dispersive spectroscopy and electron tomography to perform structural and chemical mapping of an Allende meteorite particle with 15-nm spatial resolution. We use textural and quantitative elemental information to infer the mineral composition and discuss potential processes that occurred before or after accretion. We anticipate that correlative x-ray and electron microscopy overcome the limitations of individual imaging modalities and open up a route to future multiscale nondestructive microscopies of complex functional materials and biological systems.

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