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

Spin–Spin Coupling: Three-Bond Coupling (Vicinal Coupling)01:22

Spin–Spin Coupling: Three-Bond Coupling (Vicinal Coupling)

1.7K
Vicinal or three-bond coupling is commonly observed between protons attached to adjacent carbons. Here, nuclear spin information is primarily transferred via electron spin interactions between adjacent C‑H bond orbitals. This generally favors the antiparallel arrangement of spins, so 3J values are usually positive.
The extent of coupling depends on the C‑C bond length, the two H‑C‑C angles, any electron-withdrawing substituents, and the dihedral angle between the involved orbitals. The...
1.7K
Spin–Spin Coupling Constant: Overview01:08

Spin–Spin Coupling Constant: Overview

1.6K
In bromoethane, the three methyl protons are coupled to the two methylene protons that are three bonds away. In accordance with the n+1 rule, the signal from the methyl protons is split into three peaks with 1:2:1 relative intensities. The methylene protons appear as a quartet, with the relative intensities of 1:3:3:1.
Qualitatively, any spin plus-half nucleus polarizes the spins of its electrons to the minus-half state. Consequently, the paired electron in the hydrogen–carbon bond must...
1.6K
Spin–Spin Coupling: One-Bond Coupling01:17

Spin–Spin Coupling: One-Bond Coupling

1.6K
Coupling interactions are strongest between NMR-active nuclei bonded to each other, where spin information can be transmitted directly through the pair of bonding electrons. While nuclei polarize their electrons to the opposite spins, the bonding electron pair has opposite spins. Configurations with antiparallel nuclear spins are expected to be lower in energy. When coupling makes antiparallel states more favorable, J is considered to have a positive value. The one-bond coupling constant, 1J,...
1.6K
Valence Bond Theory02:42

Valence Bond Theory

11.6K
Coordination compounds and complexes exhibit different colors, geometries, and magnetic behavior, depending on the metal atom/ion and ligands from which they are composed. In an attempt to explain the bonding and structure of coordination complexes, Linus Pauling proposed the valence bond theory, or VBT, using the concepts of hybridization and the overlapping of the atomic orbitals. According to VBT, the central metal atom or ion (Lewis acid) hybridizes to provide empty orbitals of suitable...
11.6K

You might also read

Related Articles

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

Sort by
Same author

Multidimensional Emission Control of CsPbI<sub>3</sub> Quantum Dots Using Plasmonic Quasi-Bound States in the Continuum.

ACS nano·2026
Same author

Highly Localized Plasmonic Jackiw-Rebbi State from a Topological Phase Transition.

Nano letters·2026
Same author

Unlocking Wafer-Scale 3D Photonic Systems With Ion-Beam-Induced Origami.

Advanced materials (Deerfield Beach, Fla.)·2026
Same author

Stabilization and destabilization of multimode solitons in nonlinear degenerate multi-pass cavities.

Light, science & applications·2026
Same author

Stiffness-Switchable Conductive Nanocomposites with Temperature-Invariant Conductivity for Long-Term Brain-Computer Interfaces on Hair-Covered Scalp.

Small (Weinheim an der Bergstrasse, Germany)·2026
Same author

Correlation between peritumoral fat space blur on preoperative abdominal enhanced CT and postoperative complications in colorectal cancer: a single-center retrospective study.

American journal of translational research·2026
Same journal

Silicon-Mediated Laser Shock Synthesis of Nanocrystalline Diamonds from Low-Rank Coal.

ACS nano·2026
Same journal

Precursor-Engineered Strategy for Constructing Supported Tetra-Atom Pt Clusters to Boost Propane Dehydrogenation under Direct Resistive Heating.

ACS nano·2026
Same journal

Enterohepatic Circulation of Polystyrene Nanoplastics Promotes Intestinal Inflammation by Impairing Enteric Neurons.

ACS nano·2026
Same journal

Triboelectric Spectroscopy for Identification of Metal Ion Valence States in Aqueous Solutions.

ACS nano·2026
Same journal

Beyond the Continuum Theory: Conductance Scaling and Correlated Imaging in Atom-Scale Artificial Ion Channels.

ACS nano·2026
Same journal

Selenium-Induced Directional Growth of Ultrathin Nanowires with Subnano Amorphous Shells for High-Performance Multifunctional Electrocatalysis.

ACS nano·2026
See all related articles

Related Experiment Video

Updated: Mar 27, 2026

Residue-Free Fabrication of van der Waals Heterostructures of Two-Dimensional Materials
04:57

Residue-Free Fabrication of van der Waals Heterostructures of Two-Dimensional Materials

Published on: July 18, 2025

1.3K

Probing Spin-Orbit Coupling and Interlayer Coupling in Atomically Thin Molybdenum Disulfide Using Hydrostatic

Xiuming Dou1, Kun Ding1, Desheng Jiang1

  • 1State Key Laboratory of Superlattices and Microstructures, Institute of Semiconductors, Chinese Academy of Sciences , P.O. Box 912, Beijing 100083, China.

ACS Nano
|January 9, 2016
PubMed
Summary
This summary is machine-generated.

Pressure affects spin-orbit coupling differently in molybdenum disulfide (MoS2) layers. Spin-orbit coupling is insensitive to pressure in monolayer MoS2, while interlayer coupling strengthens in few-layer MoS2 under pressure.

Keywords:
hydrostatic pressureinterlayer couplingmolybdenum disulfidespin−orbit couplingvalence band maximum splitting

More Related Videos

Ohmic Contact Fabrication Using a Focused-ion Beam Technique and Electrical Characterization for Layer Semiconductor Nanostructures
08:12

Ohmic Contact Fabrication Using a Focused-ion Beam Technique and Electrical Characterization for Layer Semiconductor Nanostructures

Published on: December 5, 2015

12.8K
Visualizing Uniaxial-strain Manipulation of Antiferromagnetic Domains in Fe1+YTe Using a Spin-polarized Scanning Tunneling Microscope
09:06

Visualizing Uniaxial-strain Manipulation of Antiferromagnetic Domains in Fe1+YTe Using a Spin-polarized Scanning Tunneling Microscope

Published on: March 24, 2019

8.7K

Related Experiment Videos

Last Updated: Mar 27, 2026

Residue-Free Fabrication of van der Waals Heterostructures of Two-Dimensional Materials
04:57

Residue-Free Fabrication of van der Waals Heterostructures of Two-Dimensional Materials

Published on: July 18, 2025

1.3K
Ohmic Contact Fabrication Using a Focused-ion Beam Technique and Electrical Characterization for Layer Semiconductor Nanostructures
08:12

Ohmic Contact Fabrication Using a Focused-ion Beam Technique and Electrical Characterization for Layer Semiconductor Nanostructures

Published on: December 5, 2015

12.8K
Visualizing Uniaxial-strain Manipulation of Antiferromagnetic Domains in Fe1+YTe Using a Spin-polarized Scanning Tunneling Microscope
09:06

Visualizing Uniaxial-strain Manipulation of Antiferromagnetic Domains in Fe1+YTe Using a Spin-polarized Scanning Tunneling Microscope

Published on: March 24, 2019

8.7K

Area of Science:

  • Condensed Matter Physics
  • Materials Science
  • Nanotechnology

Background:

  • Two-dimensional transition-metal dichalcogenides like molybdenum disulfide (MoS2) are crucial for spintronics due to spin-orbit and interlayer coupling.
  • Understanding how these couplings behave under pressure is key to optimizing MoS2 for advanced electronic applications.

Purpose of the Study:

  • To investigate the pressure-dependent behavior of exciton absorption peaks in monolayer, bilayer, and trilayer MoS2.
  • To elucidate the roles of spin-orbit coupling and interlayer coupling in MoS2 under hydrostatic pressure.

Main Methods:

  • Experimental measurement of reflectance spectra of MoS2 under varying hydrostatic pressures (up to 3.98 GPa).
  • Theoretical calculations using density functional theory (DFT) to model the electronic band structure.
  • Analysis of exciton absorption peaks (A, B, and C) and valence band maximum splitting.

Main Results:

  • Spin-orbit coupling-induced valence band splitting in monolayer MoS2 remained largely unaffected by pressure.
  • Interlayer coupling in bilayer and trilayer MoS2 showed a pressure-induced strengthening, increasing the valence band splitting.
  • Exciton C was identified as a van Hove singularity-related interband transition.

Conclusions:

  • Spin-orbit coupling in MoS2 is pressure-insensitive, while interlayer coupling is pressure-sensitive, particularly in few-layer structures.
  • These findings provide critical insights into the pressure-dependent electronic properties of MoS2 for spintronic device design.
  • The study successfully correlates experimental observations with theoretical predictions.