Jove
Visualize
Contact Us
JoVE
x logofacebook logolinkedin logoyoutube logo
ABOUT JoVE
OverviewLeadershipBlogJoVE Help Center
AUTHORS
Publishing ProcessEditorial BoardScope & PoliciesPeer ReviewFAQSubmit
LIBRARIANS
TestimonialsSubscriptionsAccessResourcesLibrary Advisory BoardFAQ
RESEARCH
JoVE JournalMethods CollectionsJoVE Encyclopedia of ExperimentsArchive
EDUCATION
JoVE CoreJoVE BusinessJoVE Science EducationJoVE Lab ManualFaculty Resource CenterFaculty Site
Terms & Conditions of Use
Privacy Policy
Policies

Related Experiment Videos

Quantitative evaluation of statistical errors in small-angle X-ray scattering measurements.

Steffen M Sedlak1, Linda K Bruetzel1, Jan Lipfert1

  • 1Department of Physics, Nanosystems Initiative Munich, and Center for NanoScience, LMU Munich , Amalienstrasse 54, Munich, 80799, Germany.

Journal of Applied Crystallography
|April 7, 2017
PubMed
Summary

A new model quantifies measurement errors in small-angle X-ray scattering (SAXS) experiments by considering setup geometry and physics. This model accurately predicts experimental errors and provides guidelines for optimizing SAXS data acquisition.

Related Concept Videos

You might also read

Related Articles

Articles linked to this work by shared authors, journal, and citation graph.

Sort by
Same author

DNA twist at high alkali ion concentrations: evidence against C-form DNA in solution.

Nucleic acids research·2026
Same author

Kinetically Controlled Morphologies of Magnetic Nanoparticles through Ligand and Precursor Chemistry.

ACS nanoscience Au·2026
Same author

Protein force spectroscopy using magnetic tweezers: Slow and steady wins the race?

Biophysical journal·2025
Same author

Optical Control of Membrane Viscosity Modulates ER-to-Golgi Trafficking.

ACS central science·2025
Same author

The effects of DMSO on DNA conformations and mechanics.

Biophysical journal·2025
Same author

Labelizer: systematic selection of protein residues for covalent fluorophore labeling.

Nature communications·2025

Area of Science:

  • Materials Science
  • Biophysics
  • Physical Chemistry

Background:

  • Small-angle X-ray scattering (SAXS) is a powerful technique for characterizing nanoscale structures.
  • Accurate estimation of measurement errors is crucial for reliable SAXS data analysis.
  • Existing error models often do not fully capture the complexities of the SAXS measurement process.

Purpose of the Study:

  • To develop a new, physics-based model for quantifying measurement errors in SAXS experiments.
  • To validate the model against experimental data from various SAXS setups.
  • To provide a framework for realistic error estimation and optimization of SAXS measurements.

Main Methods:

  • Development of a theoretical model incorporating experimental setup geometry and measurement physics.
Keywords:
SAXShybrid pixel detectorsmeasurement errorsscattering profilessimulationssmall-angle X-ray scattering

Related Experiment Videos

  • Experimental validation using data from synchrotron and in-house anode-based SAXS instruments.
  • Formulation of the error variance as a function of scattering intensity and momentum transfer: σ²(q) = [I(q) + const.]/(kq).

    • Main Results:

    • The proposed model accurately reproduces experimentally determined errors across diverse SAXS setups.
    • The model provides a concrete procedure for calculating realistic measurement errors for simulated SAXS profiles.
    • Identified fitting parameters (k and const.) are characteristic of the specific experimental setup.

    Conclusions:

    • The new model offers a robust method for evaluating measurement uncertainties in SAXS.
    • Results provide valuable guidelines for optimizing SAXS experimental design and data collection.
    • Enables quantitative assessment of measurement errors, enhancing the reliability of SAXS studies.