Related Experiment Video
Updated: Apr 12, 2026
08:53
Biochemical and Structural Characterization of the Carbohydrate Transport Substrate-binding-protein SP0092
Published on: October 2, 2017
32.0K
Operational properties of fluctuation X-ray scattering data.
Erik Malmerberg1, Cheryl A Kerfeld2, Petrus H Zwart3
1Physical Biosciences Division, Lawrence Berkeley National Laboratory, Berkeley, California, USA ; Department of Plant and Microbial Biology, UC Berkeley, Berkeley, California, USA.
Iucrj
|May 22, 2015
Summary
Fluctuation X-ray scattering (FXS) captures more information from X-ray scattering images, offering deeper structural insights into materials. This study presents FXS data properties and analysis methods for better experimental planning and data validation.
Area of Science:
- Materials Science
- Biophysics
- Nanotechnology
Background:
- Standard X-ray scattering techniques have limitations in capturing dynamic structural information.
- Fluctuation X-ray scattering (FXS) utilizes fast timescales and coherent beams to enhance data content.
- FXS is typically performed at X-ray free-electron lasers (XFELs).
Purpose of the Study:
- To provide a fundamental understanding of fluctuation X-ray scattering (FXS) data characteristics and properties.
- To demonstrate the impact of FXS data on the accuracy of derived structural models.
- To present generalized Guinier and Porod laws for FXS data analysis.
Main Methods:
- Analysis of X-ray scattering data collected on ultrafast timescales.
- Utilizing (partially) coherent X-ray beams for enhanced information content.
- Development of theoretical frameworks for FXS data interpretation.
Main Results:
- FXS measurements reveal significantly increased information content compared to standard methods.
- The study provides an intuitive view of FXS data nature and properties.
- Generalizations of Guinier and Porod laws applicable to FXS data are presented.
Conclusions:
- FXS offers advanced structural insights into biological molecules, nanoparticles, and mesoscopic materials.
- Understanding FXS data properties is crucial for experimental validation and data use.
- The presented generalizations aid in planning FXS experiments and assessing data quality.
Related Concept Videos
02:18X-ray Crystallography
27.0K
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...
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...
27.0K
01:10X-ray Diffraction of Biological Samples
5.2K
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...
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...
5.2K
01:29Determination of Crystal Structures
118
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...
118
01:23Atomic Spectroscopy: Absorption, Emission, and Fluorescence
3.6K
Atomic spectroscopy is a vital tool in elemental analysis, both qualitatively and quantitatively. It can be broadly divided into optical spectroscopy, mass spectroscopy, and X-ray spectroscopy methods. The optical spectroscopic methods are atomic absorption spectroscopy (AAS), atomic emission spectroscopy (AES), and atomic fluorescence spectroscopy (AFS). The first step in all three methods is atomization, where the solid, liquid, or solution-phase samples are converted into gas-phase atoms and...
3.6K
01:07Scanning Electron Microscopy
6.0K
A scanning electron microscope (SEM) is used to study the surface features of a sample by using an electron beam that scans the sample surface in a two-dimensional manner. Typically, areas between ~1 centimeter to 5 micrometers in width can be imaged. SEM can be used to image bacteria, viruses, tissues as well as larger samples like insects. Conventional SEM gives a magnification ranging from 20X to 30,000X and spatial resolution of 50 to 100 nanometers.
Fundamental Principles
Accelerated...
Fundamental Principles
Accelerated...
6.0K