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Related Concept Videos

Determination of Crystal Structures01:29

Determination of Crystal Structures

124
In the late 1800s, the revelation that light extended beyond visible wavelengths led to the discovery of X-rays by Wilhelm Roentgen. Recognized as high-energy electromagnetic radiation with short wavelengths, X-rays prompted exploration into their interaction with crystals. Max von Laue proposed in 1912 that the periodic arrangement of atoms, ions, or molecules in crystals would cause them to diffract X-rays, a hypothesis confirmed through experiments with copper sulfate and zinc sulfide...
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X-ray Crystallography02:18

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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...
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X-ray Diffraction of Biological Samples01:10

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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...
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Related Experiment Video

Updated: Apr 18, 2026

X-ray Powder Diffraction in Conservation Science: Towards Routine Crystal Structure Determination of Corrosion Products on Heritage Art Objects
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Solving difficult structures with electron diffraction.

J M Zuo1, J L Rouviére2

  • 1Department of Materials Science and Engineering, University of Illinois , Urbana, IL 61801, USA ; Seitz Materials Research Laboratory, University of Illinois , Urbana, IL 61801, USA ; CEA/INAC/SP2M/LEMMA , 19 rue des Martyrs, Grenoble, 38 054, France.

Iucrj
|January 23, 2015
PubMed
Summary
This summary is machine-generated.

Precession electron diffraction resolves a major hurdle in analyzing crystal structures. This advanced technique offers a promising new method for determining the structure of challenging crystalline materials.

Keywords:
electron crystallographyelectron techniqueselectron-based structure analysisprecession electron diffraction

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Area of Science:

  • Crystallography
  • Materials Science
  • Electron Microscopy

Background:

  • Electron diffraction is crucial for crystal structure determination.
  • Analyzing complex or small crystals presents significant challenges.
  • Traditional methods often struggle with certain types of crystalline materials.

Purpose of the Study:

  • To address the limitations of conventional electron diffraction techniques.
  • To introduce and validate precession electron diffraction as a solution.
  • To highlight its potential for structure determination of difficult crystals.

Main Methods:

  • Utilizing precession electron diffraction (PED) for data acquisition.
  • Applying advanced computational methods for data analysis.
  • Comparing PED results with conventional methods where applicable.

Main Results:

  • Precession electron diffraction has successfully overcome a persistent challenge in the field.
  • The technique demonstrates enhanced data quality and reduced artifacts.
  • Structure determination of previously intractable crystals is now feasible.

Conclusions:

  • Precession electron diffraction represents a significant advancement in crystallographic analysis.
  • The method provides a robust approach for the structure determination of challenging crystalline samples.
  • Further development promises a universally applicable technique for crystal structure analysis.