Jove
Visualize
联系我们
JoVE
x logofacebook logolinkedin logoyoutube logo
关于 JoVE
概览领导团队博客JoVE 帮助中心
作者
出版流程编辑委员会范围与政策同行评审常见问题投稿
图书馆员
用户评价订阅访问资源图书馆顾问委员会常见问题
研究
JoVE JournalMethods CollectionsJoVE Encyclopedia of Experiments存档
教育
JoVE CoreJoVE BusinessJoVE Science EducationJoVE Lab Manual教师资源中心教师网站
使用条款与条件
隐私政策
政策

相关概念视频

X-ray Diffraction of Biological Samples01:10

X-ray Diffraction of Biological Samples

3.8K
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...
3.8K
X-ray Crystallography02:18

X-ray Crystallography

23.8K
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...
23.8K

您也可能阅读

相关文章

通过共同作者、期刊和引用图与本文相关的文章。

排序
Same author

Operando X-ray scattering reveals ordering-mediated solidification in additive manufacturing.

Nature communications·2026
Same author

ZENN: A thermodynamics-inspired computational framework for heterogeneous data-driven modeling.

Proceedings of the National Academy of Sciences of the United States of America·2026
Same author

Revising the theory of cross phenomena.

Journal of physics. Condensed matter : an Institute of Physics journal·2025
Same author

Morphological Heterogeneity Impact of Film Solid-State Cathode on Utilization and Fracture Dynamics.

ACS nano·2025
Same author

Evolution of dislocations during the rapid solidification in additive manufacturing.

Nature communications·2025
Same author

Suboxides and subselenides: intermediate reaction products to form Ga<sub>2</sub>O<sub>3</sub>, Ga<sub>2</sub>Se<sub>3</sub>, In<sub>2</sub>O<sub>3</sub>, In<sub>2</sub>Se<sub>3</sub>, SnO<sub>2</sub>, and SnSe<sub>2</sub> during molecular-beam epitaxy.

Physical chemistry chemical physics : PCCP·2024

相关实验视频

Updated: May 30, 2025

Microfluidic Chips for In Situ Crystal X-ray Diffraction and In Situ Dynamic Light Scattering for Serial Crystallography
11:48

Microfluidic Chips for In Situ Crystal X-ray Diffraction and In Situ Dynamic Light Scattering for Serial Crystallography

Published on: April 24, 2018

14.7K

在使用机器学习的X射线衍射数据中解热力学效应.

Rachel E Lim1, Shun Li Shang1, Chihpin Chuang2

  • 1Pennsylvania State University, University Park, PA 16802, USA.

Acta crystallographica. Section A, Foundations and advances
|January 31, 2025
PubMed
概括
此摘要是机器生成的。

这项研究引入了一种结合基于物理的建模和机器学习的新方法,用于在X射线衍射数据中分离热和机械应变. 这种方法增强了对在热力学负荷下材料行为的理解,特别是在激光融过程中.

关键词:
高斯过程回归的高斯过程回归.第一个原则是计算计算.机器学习是机器学习.基于物理学的建模.压力 压力 压力 压力压力就是压力,压力就是压力.超级合金是一种超级合金.同步X射线衍射同步X射线衍射.

更多相关视频

Synchrotron X-ray Microdiffraction and Fluorescence Imaging of Mineral and Rock Samples
10:12

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

Published on: June 19, 2018

8.9K
Visualization of Failure and the Associated Grain-Scale Mechanical Behavior of Granular Soils under Shear using Synchrotron X-Ray Micro-Tomography
09:00

Visualization of Failure and the Associated Grain-Scale Mechanical Behavior of Granular Soils under Shear using Synchrotron X-Ray Micro-Tomography

Published on: September 29, 2019

13.2K

相关实验视频

Last Updated: May 30, 2025

Microfluidic Chips for In Situ Crystal X-ray Diffraction and In Situ Dynamic Light Scattering for Serial Crystallography
11:48

Microfluidic Chips for In Situ Crystal X-ray Diffraction and In Situ Dynamic Light Scattering for Serial Crystallography

Published on: April 24, 2018

14.7K
Synchrotron X-ray Microdiffraction and Fluorescence Imaging of Mineral and Rock Samples
10:12

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

Published on: June 19, 2018

8.9K
Visualization of Failure and the Associated Grain-Scale Mechanical Behavior of Granular Soils under Shear using Synchrotron X-Ray Micro-Tomography
09:00

Visualization of Failure and the Associated Grain-Scale Mechanical Behavior of Granular Soils under Shear using Synchrotron X-Ray Micro-Tomography

Published on: September 29, 2019

13.2K

科学领域:

  • 材料科学 材料科学 材料科学
  • 计算材料科学科学 计算材料科学
  • 晶体学 晶体学是指结晶学.

背景情况:

  • 在热力学负荷下分析晶体材料时,X射线衍射 (XRD) 是至关重要的.
  • 空间扩大和重叠的衍射峰使复杂应变状态的分析变得复杂.
  • 现有的方法难以解开不同的格子变形机制.

研究的目的:

  • 从XRD数据中开发一种新的方法来解热和机械弹性菌株.
  • 分析Inconel 625在激光化过程中的热力学状态演变.
  • 为了提高晶体材料的应变分析的准确性.

主要方法:

  • 利用基于物理的建模 (热传输,流体流动,弹性塑性,XRD模拟) 和机器学习 (高斯过程回归) 的组合.
  • 使用模拟生成训练数据,将衍射强度映射到应变场.
  • 采用第一原理密度函数理论来准确计算材料属性.

主要成果:

  • 从复杂的XRD图案中成功解了热和机械弹性菌株.
  • 提取了Inconel 625在激光化过程中热力学状态的演变.
  • 演示了训练有素的模型分析不规则形状的衍射峰值的能力.

结论:

  • 开发的方法有效地分离了热和机械应变贡献.
  • 这种方法为快速加工过程中材料的热力学行为提供了详细的见解.
  • 机器学习增强的XRD分析为材料表征提供了一个强大的工具.