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 Concept Videos

¹H NMR: Interpreting Distorted and Overlapping Signals01:02

¹H NMR: Interpreting Distorted and Overlapping Signals

1.4K
Spin systems where the difference in chemical shifts of the coupled nuclei is greater than ten times J are called first-order spin systems. These nuclei are weakly coupled, and their chemical shifts and coupling constant can generally be estimated from the well-separated signals in the spectrum.
As Δν decreases and the signals move closer, the doublets appear increasingly distorted. The intensities of the inner lines increase at the cost of those of the outer lines as the signals are...
1.4K
X-ray Crystallography02:18

X-ray Crystallography

25.6K
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...
25.6K
Structures of Solids02:22

Structures of Solids

17.3K
Solids in which the atoms, ions, or molecules are arranged in a definite repeating pattern are known as crystalline solids. Metals and ionic compounds typically form ordered, crystalline solids. A crystalline solid has a precise melting temperature because each atom or molecule of the same type is held in place with the same forces or energy. Amorphous solids or non-crystalline solids (or, sometimes, glasses) which lack an ordered internal structure and are randomly arranged. Substances that...
17.3K
¹H NMR of Conformationally Flexible Molecules: Temporal Resolution00:52

¹H NMR of Conformationally Flexible Molecules: Temporal Resolution

1.2K
At room temperature, the chair conformer of cyclohexane undergoes rapid ring flipping between two equivalent chair conformers at a rate of approximately 105 times per second. These two chair conformers are in equilibrium. The rapid ring flipping results in the interconversion of the axial proton to an equatorial proton and an equatorial to the axial proton. Such interconversions are too rapid and cannot be detected on the NMR timescale. Hence, the NMR spectrometer cannot distinguish between the...
1.2K
IR Spectrum Peak Splitting: Symmetric vs Asymmetric Vibrations01:08

IR Spectrum Peak Splitting: Symmetric vs Asymmetric Vibrations

1.7K
Identical bonds within a polyatomic group can stretch symmetrically (in-phase) or asymmetrically (out-of-phase). Similar to hydrogen bonding, these vibrations also influence the shape of the IR peak. Generally, asymmetric stretching frequencies are higher than symmetric stretching frequencies. For example, primary amines exhibit two distinct IR peaks between 3300–3500 cm−1 corresponding to the symmetric and asymmetric N-H stretching, while secondary amines exhibit a single...
1.7K
Crystal Field Theory - Octahedral Complexes02:58

Crystal Field Theory - Octahedral Complexes

30.2K
Crystal Field Theory
To explain the observed behavior of transition metal complexes (such as colors), a model involving electrostatic interactions between the electrons from the ligands and the electrons in the unhybridized d orbitals of the central metal atom has been developed. This electrostatic model is crystal field theory (CFT). It helps to understand, interpret, and predict the colors, magnetic behavior, and some structures of coordination compounds of transition metals.
CFT focuses on...
30.2K

You might also read

Related Articles

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

Sort by
Same author

Observing the Glass and Jamming Transitions of Dense Granular Material in Microgravity.

Physical review letters·2025
Same author

Dynamics in vibrofluidized beds: A diffusing wave spectroscopy study.

Physical review. E·2025
Same author

Rheological Regimes in Agitated Granular Media under Shear.

Physical review letters·2025
Same author

Impact of Femoral and Tibial Torsion on Patellofemoral Loading in Individuals With Patellofemoral Instability.

Journal of orthopaedic research : official publication of the Orthopaedic Research Society·2025
Same author

How to obtain an integrated picture of the molecular networks involved in adaptation to microgravity in different biological systems?

NPJ microgravity·2024
Same author

How are cell and tissue structure and function influenced by gravity and what are the gravity perception mechanisms?

NPJ microgravity·2024

Related Experiment Video

Updated: Jan 3, 2026

Methods of Ex Situ and In Situ Investigations of Structural Transformations: The Case of Crystallization of Metallic Glasses
08:55

Methods of Ex Situ and In Situ Investigations of Structural Transformations: The Case of Crystallization of Metallic Glasses

Published on: June 7, 2018

8.9K

Distinguishing noisy crystalline structures using bond orientational order parameters.

Jan Haeberle1, Matthias Sperl1,2, Philip Born3

  • 1Institut für Materialphysik im Weltraum, Deutsches Zentrum für Luft-und Raumfahrt, 51170, Köln, Germany.

The European Physical Journal. E, Soft Matter
|November 28, 2019
PubMed
Summary

Bond orientational order parameters (BOOPs) are crucial for soft matter analysis. This study introduces a refined neighborhood definition for BOOPs, enhancing structural identification accuracy, especially under noisy conditions.

Keywords:
Soft Matter: Self-organisation and Supramolecular Assemblies

More Related Videos

Structure and Coordination Determination of Peptide-metal Complexes Using 1D and 2D 1H NMR
14:44

Structure and Coordination Determination of Peptide-metal Complexes Using 1D and 2D 1H NMR

Published on: December 16, 2013

10.0K
Atomic Scale Structural Studies of Macromolecular Assemblies by Solid-state Nuclear Magnetic Resonance Spectroscopy
14:55

Atomic Scale Structural Studies of Macromolecular Assemblies by Solid-state Nuclear Magnetic Resonance Spectroscopy

Published on: September 17, 2017

15.9K

Related Experiment Videos

Last Updated: Jan 3, 2026

Methods of Ex Situ and In Situ Investigations of Structural Transformations: The Case of Crystallization of Metallic Glasses
08:55

Methods of Ex Situ and In Situ Investigations of Structural Transformations: The Case of Crystallization of Metallic Glasses

Published on: June 7, 2018

8.9K
Structure and Coordination Determination of Peptide-metal Complexes Using 1D and 2D 1H NMR
14:44

Structure and Coordination Determination of Peptide-metal Complexes Using 1D and 2D 1H NMR

Published on: December 16, 2013

10.0K
Atomic Scale Structural Studies of Macromolecular Assemblies by Solid-state Nuclear Magnetic Resonance Spectroscopy
14:55

Atomic Scale Structural Studies of Macromolecular Assemblies by Solid-state Nuclear Magnetic Resonance Spectroscopy

Published on: September 17, 2017

15.9K

Area of Science:

  • Condensed matter physics
  • Materials science
  • Computational chemistry

Background:

  • Bond orientational order parameters (BOOPs) are widely used for characterizing local atomic or molecular arrangements in materials.
  • Previous studies identified ambiguities in BOOPs arising from the definition of atomic neighborhoods, impacting structural analysis.
  • Distinguishing between similar crystal structures like face-centered cubic (FCC) and body-centered cubic (BCC) can be challenging with existing methods.

Purpose of the Study:

  • To address the limitations of current bond orientational order parameters related to neighborhood definitions.
  • To develop a more robust method for local structure characterization in soft matter.
  • To improve the accuracy of distinguishing between similar crystal structures, particularly in the presence of noise.

Main Methods:

  • Investigated the performance of standard bond orientational order parameters with varying neighborhood definitions.
  • Introduced a novel, improved definition for the atomic neighborhood.
  • Applied the enhanced parameters to analyze simulated systems with introduced noise.

Main Results:

  • Demonstrated that standard BOOPs struggle to differentiate between FCC- and BCC-based structures when noise is present.
  • The proposed neighborhood definition yields robust and continuous bond orientational order parameters.
  • Accurate discrimination between crystal structures was achieved even with significant levels of noise.

Conclusions:

  • The refined neighborhood definition significantly enhances the reliability of bond orientational order parameters.
  • This improvement allows for more accurate local structure identification in complex systems, including those with experimental noise.
  • The proposed method offers a valuable tool for the analysis of soft matter and crystalline materials.