相关实验视频

Updated: Jan 15, 2026

$Synchrotron X-ray Microdiffraction and Fluorescence Imaging of Mineral and Rock Samples$

Synchrotron X-ray Microdiffraction and Fluorescence Imaging of Mineral and Rock Samples

Published on: June 19, 2018

实验室三维X射线微光束的Laue衍射

Yubin Zhang¹, Anthony Seret^1,2, Jette Oddershede³

¹Department of Civil and Mechanical Engineering, Technical University of Denmark, 2800Kongens Lyngby, Denmark.

Journal of applied crystallography

|October 9, 2025

概括

一种新的基于实验室的3DX射线微束衍射 (Lab-3DμXRD) 技术使研究人员能够进行3D晶体学表征. 这种方法可以检测到较小的颗粒,并提供微粒内信息,克服了同步子访问的限制.

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.
在X射线物理中,X射线物理

背景情况:

3D非破坏性X射线表征对于材料研究至关重要,但受到同步子访问的限制.
实验室衍射对比断层扫描 (LabDCT) 为颗粒>15-20μm提供3D颗粒特征,分辨率为~5μm.
需要先进的基于实验室的技术来表征较小的颗粒,并提供更详细的微观结构信息.

研究的目的:

开发和演示一种新的基于实验室的3DX射线微束衍射 (Lab-3DμXRD) 技术.
为了在微观尺度上实现深度分辨率的晶体学方向表征.
克服当前实验室X射线技术对材料特征的局限性.

主要方法:

整合Pt涂层双状毛细体X射线聚焦光学器到商用X射线微型计算机断层扫描 (μCT) 系统中.
开发使用聚焦多色光束的扫描断层数据采集程序.
创建用于数据采集和处理的定制软件.

主要成果:

成功实施Lab-3DμXRD技术,证明其可行性.
通过与LabDCT和同步相对照断层扫描进行比较验证.
已证明能够检测较小的颗粒 (<15-20微米) 并提供粒内晶体信息.

结论:

实验室-3DμXRD是一种可行的实验室技术,用于先进的3D晶体学表征.
该技术在研究细微微结构材料的现有方法上提供了显著的优势.
未来的开发可以将Lab-3DμXRD与LabDCT和μCT进行整合,以进行全面的多尺度和多模式材料分析.

关键词:

3DXRD 3DXRD是什么意思劳埃微光束衍射光学微粒内定向微粒内定向实验室衍射对比断层扫描扫描.扫描 3DXRD 的情况.三维X射线衍射的三维X射线.

更多相关视频

$High Pressure Single Crystal Diffraction at PX^2$ 11:32

High Pressure Single Crystal Diffraction at PX^2

Published on: January 16, 2017

$Synthesis and Microdiffraction at Extreme Pressures and Temperatures$ 07:26

Synthesis and Microdiffraction at Extreme Pressures and Temperatures

Published on: October 7, 2013

相关概念视频

X-ray Crystallography

X-ray Crystallography

The size of the unit cell and the arrangement of atoms in a crystal may be determined from measurements of the diffraction of X-rays by the crystal, termed X-ray crystallography.
Diffraction
Diffraction is the change in the direction of travel experienced by an electromagnetic wave when it encounters a physical barrier whose dimensions are comparable to those of the wavelength of the light. X-rays are electromagnetic radiation with wavelengths about as long as the distance between neighboring...

$X-ray Diffraction of Biological Samples$ 01:10

X-ray Diffraction of Biological Samples

X-ray diffraction or XRD is an analytical tool that utilizes X-rays to study ordered structures such as crystalline organic and inorganic samples, polycrystalline materials, proteins, carbohydrates, and drugs.
According to Bragg's law, when X-rays strike the sample positioned on a stage, the rays are scattered by the electron clouds around the sample atoms. The X-ray diffraction or scattering is caused by constructive interference of the X-ray waves that reflect off the internal...

Three-Dimensional Microscopy in Microbiology

Three-Dimensional Microscopy in Microbiology

Three-dimensional imaging techniques are essential in cell biology, allowing researchers to visualize intricate cellular structures with high resolution. Two prominent methods, Differential Interference Contrast Microscopy (DIC) and Confocal Scanning Laser Microscopy (CSLM), provide distinct advantages for imaging live and thick specimens, respectively.Differential Interference Contrast MicroscopyDIC microscopy enhances contrast in transparent, unstained samples by converting phase...