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Updated: Jul 2, 2026

Formation of Ordered Biomolecular Structures by the Self-assembly of Short Peptides
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Published on: November 21, 2013

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XFEL セルフアセンブリシルバー・アルケネチオレート・マイクロ結晶学

Mariya Aleksich1,2, Daniel W Paley3, Elyse A Schriber1,2

  • 1Institute of Materials Science, University of Connecticut, Storrs, Connecticut 06269, United States.

Journal of the American Chemical Society
|July 31, 2023
PubMed
まとめ

小分子連続フェムト秒結晶学 (smSFX) は,銀アルカネチオラートの原子構造を明らかにする. この方法は,小さなまたは欠陥のある結晶の課題を克服し,層の積み重ねと偶数効果を明確にします.

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A perfect crystal, in theory, has a uniform structure with the same unit cell and lattice points throughout. However, any deviation from this periodic arrangement is known as an imperfection or defect. These defects can be categorized into three types: point, line, and plane defects.Point defects occur when there is a deviation from the ideal due to missing atoms, displaced atoms, or additional atoms. These imperfections might occur due to imperfect packing during crystallization or because of...
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Imperfections in Crystal Structure: Stoichiometric Point Defects

Schottky defects arise when some lattice points in a crystal, such as those in NaCl, remain unoccupied, creating lattice vacancies without disturbing the overall electrical neutrality of the crystal. This defect is common in ionic crystals where the positive and negative ions are similar in size, as seen in sodium chloride and cesium chloride. The presence of Schottky defects enables the crystal to conduct electricity to a small extent through an ionic mechanism. Electric fields cause nearby...
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Imperfections in Crystal Structure: Non-Stoichiometric Defects

Non-stoichiometric defects refer to a type of defect in the crystal structure of a compound where the ratio of its constituent elements deviates from the ideal stoichiometric ratio. There are two main types of non-stoichiometric defects: metal excess defects and metal deficiency defects.Metal excess defects occur when there is a slight surplus of metal ions than what is required by the stoichiometric ratio of the compound. For example, heating a sodium chloride crystal in sodium vapor results...