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相关概念视频

X-ray Crystallography02:18

X-ray Crystallography

23.9K
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...
23.9K
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

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相关实验视频

Updated: Jun 24, 2025

X-ray Powder Diffraction in Conservation Science: Towards Routine Crystal Structure Determination of Corrosion Products on Heritage Art Objects
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X-ray Powder Diffraction in Conservation Science: Towards Routine Crystal Structure Determination of Corrosion Products on Heritage Art Objects

Published on: June 8, 2016

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通过波动散射进行晶体结构.

Patrick Adams1, Tamar L Greaves1, Andrew V Martin1

  • 1RMIT University, Melbourne, VIC 3000, Australia.

IUCrJ
|June 6, 2024
PubMed
概括
此摘要是机器生成的。

这项研究引入了一种新的代算法,用于从波动X射线散射数据中确定晶体结构. 这种方法可以从纳米晶体和晶体组合中确定结构,从而有可能降低晶体学对样本大小的要求.

关键词:
布拉格峰值强度的强度进行X射线交叉相关性分析.相关的波动与相关的波动有关.波动X射线散射的波动X射线散射的波动代投影算法 代投影算法分子晶体的分子晶体.连续晶体学是指连续的晶体学.结构因子强度的结构因子强度.

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Measurements of Long-range Electronic Correlations During Femtosecond Diffraction Experiments Performed on Nanocrystals of Buckminsterfullerene
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Measurements of Long-range Electronic Correlations During Femtosecond Diffraction Experiments Performed on Nanocrystals of Buckminsterfullerene

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Author Spotlight: Advancing Protein Structure Analysis for Drug Development
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Author Spotlight: Advancing Protein Structure Analysis for Drug Development

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相关实验视频

Last Updated: Jun 24, 2025

X-ray Powder Diffraction in Conservation Science: Towards Routine Crystal Structure Determination of Corrosion Products on Heritage Art Objects
09:16

X-ray Powder Diffraction in Conservation Science: Towards Routine Crystal Structure Determination of Corrosion Products on Heritage Art Objects

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Measurements of Long-range Electronic Correlations During Femtosecond Diffraction Experiments Performed on Nanocrystals of Buckminsterfullerene
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Measurements of Long-range Electronic Correlations During Femtosecond Diffraction Experiments Performed on Nanocrystals of Buckminsterfullerene

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Author Spotlight: Advancing Protein Structure Analysis for Drug Development
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Author Spotlight: Advancing Protein Structure Analysis for Drug Development

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科学领域:

  • 晶体学 晶体学是指结晶学.
  • 在X射线中,散射是X射线的散射.
  • 结构生物学是结构生物学.

背景情况:

  • 晶体学通常需要大型单晶 (微米大小) 来确定原子结构.
  • 序列数据收集方法为纳米晶体和晶体组合提供了新的可能性.
  • 波动X射线散射 (FXS) 用于单粒子成像,但尚未用于晶体结构的确定.

研究的目的:

  • 开发一种代算法,从FXS相关性中恢复晶体结构因子强度.
  • 展示算法在确定小分子和蛋白质晶体结构的能力.

主要方法:

  • 开发了一种代算法来处理FXS相关数据.
  • 来自小分子和蛋白质晶体的模拟FXS相关数据被用于测试.

主要成果:

  • 该算法成功地从模拟的FXS数据中恢复了晶体结构因子强度.
  • 精确确定了三个小分子晶体和一个蛋白质晶体的晶体结构.

结论:

  • 提出的算法可以使用FXS数据来确定晶体结构.
  • 这种方法可以应用于连续结晶学实验,并可能减少样本大小要求.