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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...

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Related Experiment Video

Updated: Sep 21, 2025

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

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

Published on: August 22, 2017

Diffraction from Nanocrystal Superlattices.

Antonio Cervellino¹, Ruggero Frison²

¹Swiss Light Source, Paul Scherrer Institut, 5232 Villigen, Switzerland.

Nanomaterials (Basel, Switzerland)

|May 28, 2022

Summary

This summary is machine-generated.

Researchers explored diffraction patterns from self-organized superlattices (SL) of nanocrystals (NC). This study details the characteristic diffraction signatures and disorder types in these ordered nanocrystal structures.

Keywords:

X-ray diffraction nanocrystals superlattices

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Last Updated: Sep 21, 2025

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

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Published on: August 22, 2017

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Area of Science:

Materials Science
Condensed Matter Physics
Crystallography

Background:

Self-organization of nanocrystals (NC) into superlattices (SL) is a developing field.
Ordered NC structures significantly impact material properties, offering application potential.
Understanding the quality of SL ordering is crucial for materials development.

Purpose of the Study:

To theoretically explore the diffraction signatures of nanocrystal superlattices.
To identify and characterize the typical types of disorder present in these structures.
To provide a framework for analyzing the quality of self-organized SL.

Main Methods:

Theoretical modeling of diffraction phenomena.
Analysis of characteristic diffraction patterns.
Simulation of disordered superlattice structures.

Main Results:

Established the unique diffraction signatures corresponding to different SL ordering types.
Identified key diffraction features indicative of specific disorder mechanisms.
Provided a theoretical basis for interpreting experimental diffraction data from NC SL.

Conclusions:

Diffraction is a powerful tool for characterizing nanocrystal superlattices.
Understanding diffraction signatures and disorder is essential for controlling material properties.
This work facilitates the study and application of self-organized nanocrystal superlattices.