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透過型電子顕微鏡における電子線と試料ー電磁ポテンシャルとの相互作用: 電子波の伝播に対する磁気ベクトルポテンシャルの影響などの新しい洞察
https://doi.org/10.15102/1394.00002407
https://doi.org/10.15102/1394.00002407722be975-6efb-4635-b316-a31c81d99cdc
| 名前 / ファイル | ライセンス | アクション |
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MakotoSchreiber - FullText (68.7 MB)
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MakotoSchreiber - FinalExamAbstract (42.9 kB)
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| Item type | 学位論文 / Thesis or Dissertation(1) | |||||||
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| 公開日 | 2022-07-01 | |||||||
| タイトル | ||||||||
| タイトル | 透過型電子顕微鏡における電子線と試料ー電磁ポテンシャルとの相互作用: 電子波の伝播に対する磁気ベクトルポテンシャルの影響などの新しい洞察 | |||||||
| 言語 | ja | |||||||
| タイトル | ||||||||
| タイトル | Diffraction-Based Experiments in Transmission Electron Microscopy: Lensing, Charging, and Amorphous Structures | |||||||
| 言語 | en | |||||||
| 言語 | ||||||||
| 言語 | eng | |||||||
| 資源タイプ | ||||||||
| 資源タイプ識別子 | http://purl.org/coar/resource_type/c_db06 | |||||||
| 資源タイプ | doctoral thesis | |||||||
| ID登録 | ||||||||
| ID登録 | 10.15102/1394.00002407 | |||||||
| ID登録タイプ | JaLC | |||||||
| アクセス権 | ||||||||
| アクセス権 | open access | |||||||
| アクセス権URI | http://purl.org/coar/access_right/c_abf2 | |||||||
| 著者 (英) |
Schreiber, Makoto
× Schreiber, Makoto
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| 抄録 | ||||||||
| 内容記述タイプ | Other | |||||||
| 内容記述 | The interaction between electrons with electromagnetic potentials is the basis for electron microscopy. To build electron microscopes and interpret the data collected through them, it is necessary to understand how electrons are influenced by potentials and how they influence the potentials within samples. By further understanding the information encoded in an electron wave after passing through a sample, new techniques for analyzing materials can be developed. Here, several methods to extend the capabilities of electron microscopy are proposed. It is demonstrated that a new form of electromagnetic lens can be produced by a torus-shaped lens with a poloidal current flow. The lensing effect is due to the magnetic vector potential in the absence of electromagnetic fields and can produce convex and concave lensing. The dynamics of charge buildup on insulating samples from the moment they are exposed to an electron beam are measured. These measurements reveal a non-uniform charge distribution in the illuminated area whose temporal development is dose-rate dependent. These results may be used to improve the resolution achievable in protein structure reconstructions. Finally, a new method to experimentally determine the structure of dominant short-range order structural motifs in amorphous materials is explored. | |||||||
| 口頭試問日 | ||||||||
| 値 | 2022-05-17 | |||||||
| 学位授与年月日 | ||||||||
| 学位授与年月日 | 2022-07-01 | |||||||
| 学位名 | ||||||||
| 学位名 | Doctor of Philosophy | |||||||
| 学位授与番号 | ||||||||
| 学位授与番号 | 甲第95号 | |||||||
| 学位授与機関 | ||||||||
| 学位授与機関識別子Scheme | kakenhi | |||||||
| 学位授与機関識別子 | 38005 | |||||||
| 学位授与機関名 | Okinawa Institute of Science and Technology Graduate University | |||||||
| 著者版フラグ | ||||||||
| 出版タイプ | VoR | |||||||
| 出版タイプResource | http://purl.org/coar/version/c_970fb48d4fbd8a85 | |||||||
| 権利 | ||||||||
| 権利情報 | © 2022 The Author | |||||||
