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在扫描电子显微镜中使用传输基库奇衍射的牙面膜的表征,与动态模板匹配相结合

Patrick Trimby¹, Mohammed Al-Mosawi², Maisoon Al-Jawad²

¹Oxford Instruments Nanoanalysis, High Wycombe, Buckinghamshire, UK; Carl Zeiss Ltd., Cambourne, Cambridge, UK.

Ultramicroscopy

|February 29, 2024

概括

带有先进模式匹配的传输基库奇衍射 (TKD) 提供了一种新的方法来分析牙面膜中酸 (HAp) 水晶体的方向. 这种方法揭示了详细的微观结构信息,这对于了解质至关重要.

科学领域:

材料科学材料科学材料科学
晶体学晶体学是指结晶学.
生物材料科学生物材料科学

背景情况:

牙面膜的物理特性取决于酸 (HAp) 结晶体结构.
通过传统的电子显微镜来描述纳米级HAp微观结构是很困难的.
像TEM和PIC这样的现有方法缺乏完整的晶体学定向数据.

研究的目的:

为了证明传输基库奇衍射 (TKD) 的有效性,加上新型模式匹配,用于分析牙面膜中HAp晶体的方向.
克服传统方法在测量完全晶体学方向方面的局限性.
为了更严格地理解HAp结构与财产关系.

主要方法:

使用扫描电子显微镜与传输基库奇衍射 (TKD).
开发并应用先进的模式匹配算法 (动态模板匹配和导向精细化) 以对TKD模式进行可靠的索引.
分析了人体面膜样本,并将结果与高分辨率TEM成像进行了比较.

主要成果:

采用TKD模式匹配方法,成功索引了质量差的衍射模式,显著提高了数据质量.
能够对HAp的完全晶体方向进行定量测量,包括c轴和围绕c轴的旋转.
揭示了晶体内部的扭曲和晶体之间的多个高角边界.

结论:

具有先进模式匹配的TKD对于表征纳米晶体面膜结构是有效的.
这种方法提供了前所未有的细节在HAp晶体的方向和晶格扭曲.
这些发现增强了对HAp微结构如何影响牙面膜物理性质的理解.

关键词:

生物矿物化的生物矿物化动态模板匹配的匹配方式面是用乳进行的.氧亚帕提特是一种氧亚帕提特.模式匹配的匹配模式传输基库奇衍射 (TKD) 是一种传输基库奇衍射.

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