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通过扫描绘制纳米晶体定向的映射,用于多峰布拉格连贯衍射成像的Laue衍射显微镜

Yueheng Zhang¹, J Nicholas Porter², Matthew J Wilkin¹

¹Department of Materials Science and Engineering, Carnegie Mellon University, Pittsburgh, PA 15213, USA.

Journal of synchrotron radiation

|May 31, 2023

概括

一种新方法简化了从多个纳米晶峰收集布拉格连贯衍射成像 (BCDI) 数据的收集. 这种技术使得纳米晶体的精确定位和映射,即使在复杂的,异质的样本.

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.
纳米技术纳米技术

背景情况:

布拉格连贯衍射成像 (BCDI) 对于分析亚微米样本至关重要.
从多个纳米晶体收集多峰BCDI数据是复杂的.
不同质的样本和多个粒度构成重大挑战.

研究的目的:

开发一种工作流程,用于在不同基板上定位和映射纳米晶体.
为了简化从多个布拉格山峰收集BCDI数据.
为了实现孤立和密集分布的纳米晶体的3D成像.

主要方法:

在先进光子源 (APS) 34-ID-C光线线上调用移动单色仪.
使用扫描Laue衍射显微镜进行纳米晶体定向和映射.
使用代阶段检索算法来构建体积应变张量器.
通过电子反散衍射 (EBSD) 测量验证结果.

主要成果:

建立了一个简化的工作流程来收集多峰BCDI数据.
该方法准确地定位和映射不同基板材料上的纳米晶体.
来自Laue衍射显微镜的实验纹理图与EBSD数据相对应得很好.
对于分离的纳米晶体和密集的纳米晶体,都实现了可靠的索引.

结论:

开发的工作流大大简化了BCDI对纳米晶体的数据收集.
扫描Laue衍射显微镜提供了强大的纳米晶体定向和映射.
这种技术为具有挑战性的纳米晶体系统的3D成像提供了强大的工具.

关键词:

在 BCDI 找 BCDI 布拉格衍射法是什么?劳埃的衍射是没有的.同步机同步机同步机同步机

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