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| Auteurs principaux: | , , , , , , , , |
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| Format: | Preprint |
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2022
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| Accès en ligne: | https://arxiv.org/abs/2206.08958 |
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| _version_ | 1866917771955142656 |
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| author | Pelz, Philipp M Griffin, Sinead Stonemeyer, Scott Popple, Derek Devyldere, Hannah Ercius, Peter Zettl, Alex Scott, Mary C Ophus, Colin |
| author_facet | Pelz, Philipp M Griffin, Sinead Stonemeyer, Scott Popple, Derek Devyldere, Hannah Ercius, Peter Zettl, Alex Scott, Mary C Ophus, Colin |
| contents | Transmission electron microscopy (TEM) is a potent technique for the determination of three-dimensional atomic scale structure of samples in structural biology and materials science. In structural biology, three-dimensional structures of proteins are routinely determined using phase-contrast single-particle cryo-electron microscopy from thousands of identical proteins, and reconstructions have reached atomic resolution for specific proteins. In materials science, three-dimensional atomic structures of complex nanomaterials have been determined using a combination of annular dark field (ADF) scanning transmission electron microscopic (STEM) tomography and subpixel localization of atomic peaks, in a method termed atomic electron tomography (AET). However, neither of these methods can determine the three-dimensional atomic structure of heterogeneous nanomaterials containing light elements. Here, we perform mixed-state electron ptychography from 34.5 million diffraction patterns to reconstruct a high-resolution tilt series of a double wall-carbon nanotube (DW-CNT), encapsulating a complex $\mathrm{ZrTe}$ sandwich structure. Class averaging of the resulting reconstructions and subpixel localization of the atomic peaks in the reconstructed volume reveals the complex three-dimensional atomic structure of the core-shell heterostructure with 17 picometer precision. From these measurements, we solve the full $\mathrm{Zr_{11}Te_{50}}$ structure, which contains a previously unobserved $\mathrm{ZrTe_{2}}$ phase in the core. The experimental realization of ptychographic atomic electron tomography (PAET) will allow for structural determination of a wide range of nanomaterials which are beam-sensitive or contain light elements. |
| format | Preprint |
| id |
arxiv_https___arxiv_org_abs_2206_08958 |
| institution | arXiv |
| publishDate | 2022 |
| record_format | arxiv |
| spellingShingle | Solving Complex Nanostructures With Ptychographic Atomic Electron Tomography Pelz, Philipp M Griffin, Sinead Stonemeyer, Scott Popple, Derek Devyldere, Hannah Ercius, Peter Zettl, Alex Scott, Mary C Ophus, Colin Applied Physics Materials Science Instrumentation and Detectors Transmission electron microscopy (TEM) is a potent technique for the determination of three-dimensional atomic scale structure of samples in structural biology and materials science. In structural biology, three-dimensional structures of proteins are routinely determined using phase-contrast single-particle cryo-electron microscopy from thousands of identical proteins, and reconstructions have reached atomic resolution for specific proteins. In materials science, three-dimensional atomic structures of complex nanomaterials have been determined using a combination of annular dark field (ADF) scanning transmission electron microscopic (STEM) tomography and subpixel localization of atomic peaks, in a method termed atomic electron tomography (AET). However, neither of these methods can determine the three-dimensional atomic structure of heterogeneous nanomaterials containing light elements. Here, we perform mixed-state electron ptychography from 34.5 million diffraction patterns to reconstruct a high-resolution tilt series of a double wall-carbon nanotube (DW-CNT), encapsulating a complex $\mathrm{ZrTe}$ sandwich structure. Class averaging of the resulting reconstructions and subpixel localization of the atomic peaks in the reconstructed volume reveals the complex three-dimensional atomic structure of the core-shell heterostructure with 17 picometer precision. From these measurements, we solve the full $\mathrm{Zr_{11}Te_{50}}$ structure, which contains a previously unobserved $\mathrm{ZrTe_{2}}$ phase in the core. The experimental realization of ptychographic atomic electron tomography (PAET) will allow for structural determination of a wide range of nanomaterials which are beam-sensitive or contain light elements. |
| title | Solving Complex Nanostructures With Ptychographic Atomic Electron Tomography |
| topic | Applied Physics Materials Science Instrumentation and Detectors |
| url | https://arxiv.org/abs/2206.08958 |