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Tang L, Higuchi T, Arai S, Tanaka H, Muto S. Development of an integrated high-voltage electron microscope-gas chromatograph-quadrupole mass spectrometer system for the operando analysis of catalytic gas reactions. Microscopy (Oxf) 2024; 73:358-366. [PMID: 38412273 DOI: 10.1093/jmicro/dfae010] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/22/2023] [Revised: 01/07/2024] [Accepted: 02/12/2024] [Indexed: 02/29/2024] Open
Abstract
This paper describes the development of a gas chromatography-quadrupole mass spectrometry system attached to a differential-pumping-type environmental cell of the reaction science high-voltage electron microscopy instrument at Nagoya University to distinguish unambiguously between different gas species with the same mass-to-charge ratio. Several model experiments were used to verify the efficacy of the newly proposed system, confirming its ability to analyse the atomic-level structural changes during heterogeneous catalysts and the associated gas-reaction kinetics simultaneously, providing new insights into operando measurements in the field of environmental transmission electron microscopy. Graphical Abstract.
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Affiliation(s)
- Longshu Tang
- Graduate School of Engineering, Nagoya University, Nagoya 464-8603, Japan
| | - Tetsuo Higuchi
- JEOL Ltd., 3-1-2 Musashino, Akishima, Tokyo 196-8558, Japan
| | - Shigeo Arai
- High-Voltage Electron Microscope Laboratory, Institute of Materials and Systems for Sustainability, Nagoya University, Nagoya 464-8603, Japan
| | - Hiromochi Tanaka
- Advanced Material Engineering Division, Toyota Motor Corporation, Susono 410-1193, Japan
| | - Shunsuke Muto
- Graduate School of Engineering, Nagoya University, Nagoya 464-8603, Japan
- High-Voltage Electron Microscope Laboratory, Institute of Materials and Systems for Sustainability, Nagoya University, Nagoya 464-8603, Japan
- Advanced Measurement Technology Center, Institute of Materials and Systems for Sustainability, Nagoya University, Nagoya 464-8603, Japan
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2
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Hayashida M, Malac M, Yamasaki J. Origin of spurious intensity in vacuum near sample edge in bright field TEM images. Micron 2022; 162:103348. [PMID: 36179589 DOI: 10.1016/j.micron.2022.103348] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/13/2022] [Revised: 09/05/2022] [Accepted: 09/05/2022] [Indexed: 10/31/2022]
Abstract
Bright-field transmission electron microscope (BFTEM) images exhibit spurious image intensity in the vacuum near the sample edge. The spurious intensity gradually decreases with increasing distance from the sample edge. By taking into account angular and energy loss distribution of the scattered electrons and lens aberrations, the origin of the spurious intensity of BFTEM images can be explained. The spurious intensity extent and magnitude can be significantly reduced by using either electron energy filtering or a small collection semiangle.
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Affiliation(s)
- Misa Hayashida
- NRC-NANO, National Research Council, Edmonton, Alberta T6G 2M9, Canada.
| | - Marek Malac
- NRC-NANO, National Research Council, Edmonton, Alberta T6G 2M9, Canada; Department of Physics, University of Alberta, Edmonton, Alberta T6G 2E1, Canada.
| | - Jun Yamasaki
- Research Center for Ultra-High Voltage Electron Microscopy, Osaka University, Ibaraki 567-0047, Japan; Institute of Materials and Systems for Sustainability, Nagoya University, Nagoya 464-8601, Japan.
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3
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Hayashida M, Malac M. High-Energy Electron Scattering in Thick Samples Evaluated by Bright-Field Transmission Electron Microscopy, Energy-Filtering Transmission Electron Microscopy, and Electron Tomography. MICROSCOPY AND MICROANALYSIS : THE OFFICIAL JOURNAL OF MICROSCOPY SOCIETY OF AMERICA, MICROBEAM ANALYSIS SOCIETY, MICROSCOPICAL SOCIETY OF CANADA 2022; 28:1-13. [PMID: 35343421 DOI: 10.1017/s1431927622000472] [Citation(s) in RCA: 5] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/14/2023]
Abstract
Energy-filtering transmission electron microscopy (TEM) and bright-field TEM can be used to extract local sample thickness $t$ and to generate two-dimensional sample thickness maps. Electron tomography can be used to accurately verify the local $t$. The relations of log-ratio of zero-loss filtered energy-filtering TEM beam intensity ($I_{{\rm ZLP}}$) and unfiltered beam intensity ($I_{\rm u}$) versus sample thickness $t$ were measured for five values of collection angle in a microscope equipped with an energy filter. Furthermore, log-ratio of the incident (primary) beam intensity ($I_{\rm p}$) and the transmitted beam $I_{{\rm tr}}$ versus $t$ in bright-field TEM was measured utilizing a camera before the energy filter. The measurements were performed on a multilayer sample containing eight materials and thickness $t$ up to 800 nm. Local thickness $t$ was verified by electron tomography. The following results are reported:• The maximum thickness $t_{{\rm max}}$ yielding a linear relation of log-ratio, $\ln ( {I_{\rm u}}/{I_{{\rm ZLP}}})$ and $\ln ( {I_{\rm p}}/{I_{{\rm tr}}} )$, versus $t$.• Inelastic mean free path ($\lambda _{{\rm in}}$) for five values of collection angle.• Total mean free path ($\lambda _{{\rm total}}$) of electrons excluded by an angle-limiting aperture.• $\lambda _{{\rm in}}$ and $\lambda _{{\rm total}}$ are evaluated for the eight materials with atomic number from $\approx$10 to 79.The results can be utilized as a guide for upper limit of $t$ evaluation in energy-filtering TEM and bright-field TEM and for optimizing electron tomography experiments.
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Affiliation(s)
- Misa Hayashida
- Nanotechnology Research Centre, National Research Council, Edmonton, ABT6G 2M9, Canada
| | - Marek Malac
- Nanotechnology Research Centre, National Research Council, Edmonton, ABT6G 2M9, Canada
- Department of Physics, University of Alberta, Edmonton, ABT6G 2E1, Canada
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4
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Petersen T, Zhao C, Bøjesen E, Broge N, Hata S, Liu Y, Etheridge J. Volume imaging by tracking sparse topological features in electron micrograph tilt series. Ultramicroscopy 2022; 236:113475. [DOI: 10.1016/j.ultramic.2022.113475] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/01/2021] [Revised: 12/17/2021] [Accepted: 01/24/2022] [Indexed: 10/19/2022]
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5
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Levine ZH, Garboczi EJ, Peskin AP, Ekman AA, Mansfield E, Holm JD. X-ray computed tomography using partially coherent Fresnel diffraction with application to an optical fiber. OPTICS EXPRESS 2021; 29:1788-1804. [PMID: 33726385 PMCID: PMC7920526 DOI: 10.1364/oe.414398] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/06/2020] [Revised: 12/18/2020] [Accepted: 12/21/2020] [Indexed: 05/17/2023]
Abstract
A reconstruction algorithm for partially coherent x-ray computed tomography (XCT) including Fresnel diffraction is developed and applied to an optical fiber. The algorithm is applicable to a high-resolution tube-based laboratory-scale x-ray tomography instrument. The computing time is only a few times longer than the projective counterpart. The algorithm is used to reconstruct, with projections and diffraction, a tilt series acquired at the micrometer scale of a graded-index optical fiber using maximum likelihood and a Bayesian method based on the work of Bouman and Sauer. The inclusion of Fresnel diffraction removes some reconstruction artifacts and use of a Bayesian prior probability distribution removes others, resulting in a substantially more accurate reconstruction.
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Affiliation(s)
- Zachary H. Levine
- Quantum Metrology Division, National Institute of Standards and Technology, Gaithersburg, MD 20899, USA
| | - Edward J. Garboczi
- Applied Chemicals and Materials Division, National Institute of Standards and Technology, Boulder, CO 80305, USA
| | - Adele P. Peskin
- Software and Systems Division, National Institute of Standards and Technology, Boulder, CO 80305, USA
| | - Axel A. Ekman
- Department of Anatomy, University of California San Francisco, San Francisco, CA 94158, USA
| | - Elisabeth Mansfield
- Applied Chemicals and Materials Division, National Institute of Standards and Technology, Boulder, CO 80305, USA
| | - Jason D. Holm
- Applied Chemicals and Materials Division, National Institute of Standards and Technology, Boulder, CO 80305, USA
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6
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Tanaka N, Fujita T, Takahashi Y, Yamasaki J, Murata K, Arai S. Progress in environmental high-voltage transmission electron microscopy for nanomaterials. PHILOSOPHICAL TRANSACTIONS. SERIES A, MATHEMATICAL, PHYSICAL, AND ENGINEERING SCIENCES 2020; 378:20190602. [PMID: 33100163 DOI: 10.1098/rsta.2019.0602] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Accepted: 07/07/2020] [Indexed: 06/11/2023]
Abstract
A new environmental high-voltage transmission electron microscope (E-HVEM) was developed by Nagoya University in collaboration with JEOL Ltd. An open-type environmental cell was employed to enable in-situ observations of chemical reactions on catalyst particles as well as mechanical deformation in gaseous conditions. One of the reasons for success was the application of high-voltage transmission electron microscopy to environmental (in-situ) observations in the gas atmosphere because of high transmission of electrons through gas layers and thick samples. Knock-on damages to samples by high-energy electrons were carefully considered. In this paper, we describe the detailed design of the E-HVEM, recent developments and various applications. This article is part of a discussion meeting issue 'Dynamic in situ microscopy relating structure and function'.
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Affiliation(s)
- Nobuo Tanaka
- Institute of Materials and Systems for Sustainability (IMaSS), Nagoya University, Nagoya 464-8603, Japan
- Nano-structure Laboratory, Japan Fine Ceramics Center, Nagoya 456-8587, Japan
| | - Takeshi Fujita
- School of Environmental Science and Engineering, Kochi University of Technology, Kochi 782-8502, Japan
| | - Yoshimasa Takahashi
- Department of Mechanical Engineering, Kansai University, Suita 564-8680, Japan
| | - Jun Yamasaki
- Institute of Materials and Systems for Sustainability (IMaSS), Nagoya University, Nagoya 464-8603, Japan
- Research Center for Ultra-High Voltage Electron Microscopy, Osaka University, Ibaraki 567-0047, Japan
| | - Kazuyoshi Murata
- National Institute for Physiological Sciences, Okazaki 444-8585, Japan
| | - Shigeo Arai
- Institute of Materials and Systems for Sustainability (IMaSS), Nagoya University, Nagoya 464-8603, Japan
- Nano-structure Laboratory, Japan Fine Ceramics Center, Nagoya 456-8587, Japan
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7
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Ghavimi MA, Bani Shahabadi A, Jarolmasjed S, Memar MY, Maleki Dizaj S, Sharifi S. Nanofibrous asymmetric collagen/curcumin membrane containing aspirin-loaded PLGA nanoparticles for guided bone regeneration. Sci Rep 2020; 10:18200. [PMID: 33097790 PMCID: PMC7584591 DOI: 10.1038/s41598-020-75454-2] [Citation(s) in RCA: 72] [Impact Index Per Article: 18.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/07/2020] [Accepted: 10/15/2020] [Indexed: 01/08/2023] Open
Abstract
The goal of the current study was to develop an asymmetric guided bone regeneration (GBR) membrane benefiting from curcumin and aspirin. The membrane was prepared using electrospinning technique and then was physic-chemically characterized by the conventional methods. The release profile of aspirin from the prepared membrane was also measured by ultraviolet spectrophotometry. Also, the antibacterial activities of the membrane was evaluated. We also assessed the in vitro effects of the prepared membrane on the biocompatibility and osteogenic differentiation of dental pulp stem cells (DPSCs), and evaluated in vivo bone regeneration using the prepared membrane in the defects created in both sides of the dog’s jaw by histology. The results from the characterization specified that the membrane was successfully prepared with monodispersed nanosized fibers, uniform network shaped morphology, negative surface charge and sustained release platform for aspirin. The membrane also showed antimicrobial effects against all tested bacteria. The presence of curcumin and aspirin in the asymmetric membrane enhanced osteogenic potential at both transcriptional and translational levels. The results of the animal test showed that the test area was completely filled with new bone after just 28 days, while the commercial membrane area remained empty. There was also a soft tissue layer above the new bone area in the test side. We suggested that the prepared membrane in this work could be used as a GBR membrane to keep soft tissue from occupying bone defects in GBR surgeries. Besides, the surgeries can be benefited from antibacterial activities and bone healing effects of this novel GBR membrane while, simultaneously, promoting bone regeneration.
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Affiliation(s)
- Mohammad Ali Ghavimi
- Department of Oral and Maxillofacial Surgery, Faculty of Dentistry, Tabriz University of Medical Sciences, Tabriz, Iran
| | - Amirhossein Bani Shahabadi
- Department of Oral and Maxillofacial Surgery, Faculty of Dentistry, Tabriz University of Medical Sciences, Tabriz, Iran
| | - Seyedhosein Jarolmasjed
- Department of Clinical Sciences, Faculty of Veterinary Medicine, University of Tabriz, Tabriz, Iran
| | - Mohammad Yousef Memar
- Infectious and Tropical Diseases Research Center, Tabriz University of Medical Sciences, Tabriz, Iran
| | - Solmaz Maleki Dizaj
- Dental and Periodontal Research Center, Tabriz University of Medical Sciences, Tabriz, Iran.
| | - Simin Sharifi
- Dental and Periodontal Research Center, Tabriz University of Medical Sciences, Tabriz, Iran. .,Stem Cell Research Center, Tabriz University of Medical Sciences, Tabriz, Iran.
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8
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Hata S, Furukawa H, Gondo T, Hirakami D, Horii N, Ikeda KI, Kawamoto K, Kimura K, Matsumura S, Mitsuhara M, Miyazaki H, Miyazaki S, Murayama MM, Nakashima H, Saito H, Sakamoto M, Yamasaki S. Electron tomography imaging methods with diffraction contrast for materials research. Microscopy (Oxf) 2020; 69:141-155. [PMID: 32115659 PMCID: PMC7240780 DOI: 10.1093/jmicro/dfaa002] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/16/2019] [Revised: 01/08/2020] [Accepted: 02/04/2020] [Indexed: 11/14/2022] Open
Abstract
Transmission electron microscopy (TEM) and scanning transmission electron microscopy (STEM) enable the visualization of three-dimensional (3D) microstructures ranging from atomic to micrometer scales using 3D reconstruction techniques based on computed tomography algorithms. This 3D microscopy method is called electron tomography (ET) and has been utilized in the fields of materials science and engineering for more than two decades. Although atomic resolution is one of the current topics in ET research, the development and deployment of intermediate-resolution (non-atomic-resolution) ET imaging methods have garnered considerable attention from researchers. This research trend is probably not irrelevant due to the fact that the spatial resolution and functionality of 3D imaging methods of scanning electron microscopy (SEM) and X-ray microscopy have come to overlap with those of ET. In other words, there may be multiple ways to carry out 3D visualization using different microscopy methods for nanometer-scale objects in materials. From the above standpoint, this review paper aims to (i) describe the current status and issues of intermediate-resolution ET with regard to enhancing the effectiveness of TEM/STEM imaging and (ii) discuss promising applications of state-of-the-art intermediate-resolution ET for materials research with a particular focus on diffraction contrast ET for crystalline microstructures (superlattice domains and dislocations) including a demonstration of in situ dislocation tomography.
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Affiliation(s)
- Satoshi Hata
- Department of Advanced Materials Science, Kyushu University, Fukuoka 816-8580, Japan
- The Ultramicroscopy Research Center, Kyushu University, Fukuoka 819-0395, Japan
| | - Hiromitsu Furukawa
- TEMography Division, System in Frontier Inc., Tachikawa-shi, Tokyo 190-0012, Japan
| | - Takashi Gondo
- Research Laboratory, Mel-Build Corporation, Fukuoka 819-0025, Japan
| | - Daisuke Hirakami
- Steel Research Laboratories, Nippon Steel Corporation, Chiba 293-8511, Japan
| | - Noritaka Horii
- TEMography Division, System in Frontier Inc., Tachikawa-shi, Tokyo 190-0012, Japan
| | - Ken-Ichi Ikeda
- Division of Materials Science and Engineering, Faculty of Engineering, Hokkaido University, Hokkaido 060-8628, Japan
| | - Katsumi Kawamoto
- TEMography Division, System in Frontier Inc., Tachikawa-shi, Tokyo 190-0012, Japan
| | - Kosuke Kimura
- Morphological Research Laboratory, Toray Research Center, Inc., Shiga 520-8567, Japan
| | - Syo Matsumura
- The Ultramicroscopy Research Center, Kyushu University, Fukuoka 819-0395, Japan
- Department of Applied Quantum Physics and Nuclear Engineering, Kyushu University, Fukuoka 819-0395, Japan
| | - Masatoshi Mitsuhara
- Department of Advanced Materials Science, Kyushu University, Fukuoka 816-8580, Japan
| | - Hiroya Miyazaki
- Research Laboratory, Mel-Build Corporation, Fukuoka 819-0025, Japan
| | - Shinsuke Miyazaki
- Research Laboratory, Mel-Build Corporation, Fukuoka 819-0025, Japan
- Analytical Instruments, Materials and Structural Analysis, Thermo Fisher Scientific, Shinagawa-ku, Tokyo 140-0002, Japan
| | - Mitsu Mitsuhiro Murayama
- Department of Materials Science and Engineering, Virginia Tech, Blacksburg, VA 24061, USA
- Energy and Environmental Directorate, Pacific Northwest National Laboratory, WA 99352, USA
- Institute for Materials Chemistry and Engineering, Kyushu University, Fukuoka 816-8580, Japan
| | - Hideharu Nakashima
- Department of Advanced Materials Science, Kyushu University, Fukuoka 816-8580, Japan
| | - Hikaru Saito
- Department of Advanced Materials Science, Kyushu University, Fukuoka 816-8580, Japan
| | - Masashi Sakamoto
- Steel Research Laboratories, Nippon Steel Corporation, Chiba 293-8511, Japan
| | - Shigeto Yamasaki
- Department of Advanced Materials Science, Kyushu University, Fukuoka 816-8580, Japan
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9
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Yamasaki J, Ubata Y, Yasuda H. Empirical determination of transmission attenuation curves in mass–thickness contrast TEM imaging. Ultramicroscopy 2019; 200:20-27. [DOI: 10.1016/j.ultramic.2019.02.005] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/28/2018] [Revised: 01/28/2019] [Accepted: 02/06/2019] [Indexed: 12/01/2022]
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10
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Sato K, Yasuda H. Probing Crystal Dislocations in a Micrometer-Thick GaN Film by Modern High-Voltage Electron Microscopy. ACS OMEGA 2018; 3:13524-13529. [PMID: 31458059 PMCID: PMC6644655 DOI: 10.1021/acsomega.8b02078] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 08/17/2018] [Accepted: 10/09/2018] [Indexed: 06/10/2023]
Abstract
We report on extreme penetration power of relativistic electrons in a micrometer-thick gallium nitride epitaxial film and its application to probing threading dislocations, which were introduced during crystal growth. Maximum usable thickness of the specimen was quantitatively evaluated using high-voltage transmission electron microscopy (TEM) operating at 1 MV. The width of dislocation images was used as a measure for the evaluation of usable thickness. Superior maximum usable thickness was obtained in scanning transmission electron microscopy (STEM) than in TEM mode; the results were 6.9 μm for STEM and 4.4 μm for TEM. In STEM, dislocations can be imaged with an almost constant width of 15-20 nm in a wide thickness range 1-4 μm. The latest high-voltage STEM is thus useful for observing dislocations in micrometer-thick inorganic materials.
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Affiliation(s)
- Kazuhisa Sato
- Research
Center for Ultra-High Voltage Electron Microscopy, Osaka University, 7-1
Mihogaoka, Ibaraki, Osaka 567-0047, Japan
- Division
of Materials and Manufacturing Science, Graduate School of Engineering, Osaka University, Suita, Osaka 565-0871, Japan
| | - Hidehiro Yasuda
- Research
Center for Ultra-High Voltage Electron Microscopy, Osaka University, 7-1
Mihogaoka, Ibaraki, Osaka 567-0047, Japan
- Division
of Materials and Manufacturing Science, Graduate School of Engineering, Osaka University, Suita, Osaka 565-0871, Japan
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11
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Hasezaki KL, Saito H, Sannomiya T, Miyazaki H, Gondo T, Miyazaki S, Hata S. Three-dimensional visualization of dislocations in a ferromagnetic material by magnetic-field-free electron tomography. Ultramicroscopy 2017; 182:249-257. [PMID: 28779615 DOI: 10.1016/j.ultramic.2017.07.016] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/14/2017] [Revised: 07/03/2017] [Accepted: 07/25/2017] [Indexed: 11/28/2022]
Abstract
In conventional transmission electron microscopy, specimens to be observed are placed in between the objective lens pole piece and therefore exposed to a strong magnetic field about 2 T. For a ferromagnetic specimen, magnetization of the specimen causes isotropic and anisotropic defocusing, deflection of the electron beam as well as deformation of the specimen, which all become more severe when the specimen tilted. Therefore electron tomography on a ferromagnetic crystalline specimen is highly challenging because tilt-series data sets must be acquired without changing the excitation condition of a specific diffraction spot. In this study, a scanning transmission electron microscopy (STEM) tomography method without magnetizing a ferromagnetic specimen has been developed for three-dimensional (3D) visualization of dislocations in α-Fe, which is a typical ferromagnetic material. Magnetic-field-free environment down to 0.38 ± 0.07 mT at the specimen position is realized by demagnetizing the objective lens pole piece of a commercial STEM instrument. By using a spherical aberration corrector with the magnetic-field-free environment, an "aberration corrected Low-Mag STEM mode" with no objective lens field reaches a convergence semi angle ∼1 mrad and a spatial resolution ∼5 nm, and shows an adequate performance of imaging dislocations under a two-beam excitation condition for a low-index diffracted beam. The illumination condition for the aberration corrected Low-Mag STEM mode gives no overlap between the direct beam disk (spot) and neighboring diffraction disks. An electron channeling contrast imaging technique, in which an annular detector was located at a doughnut area between the direct beam and the neighboring diffracted beams, was effectively employed with the aberration corrected Low-Mag STEM mode to keep image intensity high enough even at large specimen-tilt angles. The resultant tomographic observation visualized 3D dislocation arrangements and active slip planes in a deformed α-Fe specimen.
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Affiliation(s)
- Kana L Hasezaki
- Interdisciplinary Graduate school of Engineering Sciences, Kyushu University, 6-1 Kasugakoen, Kasuga-shi, Fukuoka 816-8580, Japan
| | - Hikaru Saito
- Department of Advanced Materials Science, Kyushu University, 6-1 Kasugakoen, Kasuga-shi, Fukuoka 816-8580, Japan.
| | - Takumi Sannomiya
- Department of Materials Science and Engineering, Tokyo Institute of Technology, Nagatsuta, Midori-ku, Yokohama-shi, Kanagawa 226-8503, Japan
| | - Hiroya Miyazaki
- Mel-Build Corporation, 2-11-36, Ishimaru, Nishi-ku, Fukuoka-shi, Fukuoka 819-0025, Japan
| | - Takashi Gondo
- Mel-Build Corporation, 2-11-36, Ishimaru, Nishi-ku, Fukuoka-shi, Fukuoka 819-0025, Japan
| | - Shinsuke Miyazaki
- Mel-Build Corporation, 2-11-36, Ishimaru, Nishi-ku, Fukuoka-shi, Fukuoka 819-0025, Japan; FEI Company Japan Ltd, (Currently, Materials and Structural Analysis, Thermo Fisher Scientific), 4-12-2 Higashi-Shinagawa, Shinagawa-ku, Tokyo 140-0002, Japan
| | - Satoshi Hata
- Department of Advanced Materials Science, Kyushu University, 6-1 Kasugakoen, Kasuga-shi, Fukuoka 816-8580, Japan; The Ultramicroscopy Research Center, Kyushu University, 744 Motooka, Nishi-ku, Fukuoka 819-0395, Japan
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12
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Hata S, Miyazaki S, Gondo T, Kawamoto K, Horii N, Sato K, Furukawa H, Kudo H, Miyazaki H, Murayama M. In-situ straining and time-resolved electron tomography data acquisition in a transmission electron microscope. Microscopy (Oxf) 2017; 66:143-153. [PMID: 27993950 DOI: 10.1093/jmicro/dfw109] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/14/2016] [Accepted: 11/23/2016] [Indexed: 11/13/2022] Open
Abstract
This paper reports the preliminary results of a new in-situ three-dimensional (3D) imaging system for observing plastic deformation behavior in a transmission electron microscope (TEM) as a directly relevant development of the recently reported straining-and-tomography holder [Sato K et al. (2015) Development of a novel straining holder for transmission electron microscopy compatible with single tilt-axis electron tomography. Microsc. 64: 369-375]. We designed an integrated system using the holder and newly developed straining and image-acquisition software and then developed an experimental procedure for in-situ straining and time-resolved electron tomography (ET) data acquisition. The software for image acquisition and 3D visualization was developed based on the commercially available ET software TEMographyTM. We achieved time-resolved 3D visualization of nanometer-scale plastic deformation behavior in a Pb-Sn alloy sample, thus demonstrating the capability of this system for potential applications in materials science.
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Affiliation(s)
- S Hata
- Department of Electrical and Materials Science and Engineering and The Ultramicroscopy Research Center, Kyushu University, 6-1 Kasugakoen, Kasuga-shi, Fukuoka 816-8580, Japan
| | - S Miyazaki
- FEI Company Japan Ltd. (Currently, Materials and Structural Analysis, Thermo Fisher Scientific), 4-12-2 Higashi-Shinagawa, Shinagawa-ku, Tokyo 140-0002, Japan.,Mel-Build Corporation, 3-1-15, Shimoyamato, Nishi-ku, Fukuoka 819-0052, Japan
| | - T Gondo
- Mel-Build Corporation, 3-1-15, Shimoyamato, Nishi-ku, Fukuoka 819-0052, Japan
| | - K Kawamoto
- Engineering Department, System in Frontier Inc., 2-8-3, Shinsuzuharu bldg. 4F, Akebono-cho, Tachikawa-shi, Tokyo 190-0012, Japan
| | - N Horii
- Engineering Department, System in Frontier Inc., 2-8-3, Shinsuzuharu bldg. 4F, Akebono-cho, Tachikawa-shi, Tokyo 190-0012, Japan
| | - K Sato
- Research Center for Ultra-High Voltage Electron Microscopy, Osaka University, 7-1 Mihogaoka, Ibaraki, Osaka 567-0047, Japan
| | - H Furukawa
- System in Frontier Inc., 2-8-3, Shinsuzuharu bldg. 4F, Akebono-cho, Tachikawa-shi, Tokyo 190-0012, Japan
| | - H Kudo
- Faculty of Engineering, Information and Systems, University of Tsukuba, Tennoudai 1-1-1, Tsukuba 305-8573, Japan.,JST-ERATO, Momose Quantum-Beam Phase Imaging Project, Katahira 2-1-1, Aoba-ku, Sendai 980-8577, Japan
| | - H Miyazaki
- Mel-Build Corporation, 3-1-15, Shimoyamato, Nishi-ku, Fukuoka 819-0052, Japan
| | - M Murayama
- Department of Materials Science and Engineering, Virginia Tech, 134 Randolph Hall (MC 0286), 460 Old Turner Street, Blacksburg, VA 24061, USA
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13
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Hayashida M, Malac M. Practical electron tomography guide: Recent progress and future opportunities. Micron 2016; 91:49-74. [PMID: 27728842 DOI: 10.1016/j.micron.2016.09.010] [Citation(s) in RCA: 20] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/09/2016] [Revised: 09/26/2016] [Accepted: 09/27/2016] [Indexed: 10/20/2022]
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14
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Yamasaki J, Mori M, Hirata A, Hirotsu Y, Tanaka N. Depth-resolution imaging of crystalline nanoclusters attached on and embedded in amorphous films using aberration-corrected TEM. Ultramicroscopy 2014; 151:224-231. [PMID: 25432326 DOI: 10.1016/j.ultramic.2014.11.005] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/09/2014] [Revised: 10/26/2014] [Accepted: 11/06/2014] [Indexed: 11/26/2022]
Abstract
For observations of crystalline nanoclusters, the features and capabilities of depth-resolution imaging by aberration-corrected transmission electron microscopy (TEM) were investigated using image simulations and experiments for two types of samples. The first sample was gold clusters attached on an amorphous carbon film. The experimental through-focal series indicated that the focal plane for the cluster was shifted 3 nm from that for the supporting film. This difference is due to the depth-resolution imaging of the cluster and film, the mid-planes of which are separated by 3 nm along the depth direction (the electron incident direction). On the basis of this information, the three-dimensional configuration of the sample, such as the film thickness of 2 nm, was successfully illustrated. The second sample was a Zr₆₆.₇Ni₃₃.₃ metallic glass including a medium-range-order (MRO) structure, which was approximately considered to be a crystalline cluster with a diameter of 1.6 nm. In the experimental through-focal series, the lattice fringe of the MRO cluster was visible at limited focal conditions. Image simulations reproduced well the focal conditions and also indicated a structural condition for the visualization that the embedded cluster must be apart from the mid-plane of the matrix film. Similar to the case of the first sample, this result can be explained by the idea that the "effective focal planes" for the film and cluster are at different heights. This type of depth-resolution phase contrast imaging is possible only in aberration-corrected TEM and when the sample has a simple structure and is sufficiently thin for the kinematical scattering approximation.
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Affiliation(s)
- Jun Yamasaki
- Research Center for Ultra-High Voltage Electron Microscopy, Osaka University, 7-1 Mihogaoka, Ibaraki, Osaka 567-0047, Japan; EcoTopia Science Institute, Nagoya University, Furo-cho, Chikusa-ku, Nagoya 464-8603, Japan.
| | - Masayuki Mori
- Graduate School of Engineering, Nagoya University, Furo-cho, Chikusa-ku, Nagoya 464-8603, Japan
| | - Akihiko Hirata
- Advanced Institute for Materials Research, Tohoku University, 2-1-1 Katahira, Aoba-ku, Sendai 980-8577, Japan
| | - Yoshihiko Hirotsu
- Institute of Scientific and Industrial Research, Osaka University, 8-1 Mihogaoka, Ibaraki, Osaka 567-0047, Japan
| | - Nobuo Tanaka
- EcoTopia Science Institute, Nagoya University, Furo-cho, Chikusa-ku, Nagoya 464-8603, Japan
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