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

Valence Bond Theory02:42

Valence Bond Theory

10.3K
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...
10.3K
Hybridization of Atomic Orbitals I03:24

Hybridization of Atomic Orbitals I

60.2K
The mathematical expression known as the wave function, ψ, contains information about each orbital and the wavelike properties of electrons in an isolated atom. When atoms are bound together in a molecule, the wave functions combine to produce new mathematical descriptions that have different shapes. This process of combining the wave functions for atomic orbitals is called hybridization and is mathematically accomplished by the linear combination of atomic orbitals. The new orbitals that...
60.2K
Spin–Spin Coupling: One-Bond Coupling01:17

Spin–Spin Coupling: One-Bond Coupling

1.2K
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,...
1.2K
Spin–Spin Coupling: Two-Bond Coupling (Geminal Coupling)01:20

Spin–Spin Coupling: Two-Bond Coupling (Geminal Coupling)

1.4K
Two NMR-active nuclei bonded to a central atom can be involved in geminal or two-bond coupling. Geminal coupling is commonly seen between diastereotopic protons in chiral molecules and unsymmetrical alkenes, among others.
The central atom need not be NMR-active because its electrons are affected by the electron polarization of the spin-active atoms. However, spin information is transmitted less effectively than in one-bond coupling, and 2J values are usually weaker than 1J values. The energy of...
1.4K
Spin–Spin Coupling: Three-Bond Coupling (Vicinal Coupling)01:22

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

1.3K
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...
1.3K
Spin–Spin Coupling Constant: Overview01:08

Spin–Spin Coupling Constant: Overview

1.2K
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...
1.2K

You might also read

Related Articles

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

Sort by
Same author

Association of intensive blood pressure lowering after endovascular thrombectomy with outcomes according to contrast staining ASPECTS.

Stroke and vascular neurology·2026
Same author

Morphology-Embedded Signatures of Lattice Strain in Ferroelectric BaTiO<sub>3</sub> Thin Films Revealed by Machine Learning.

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

OpenDicomViewer: A Lightweight Open-Source DICOM Viewer for macOS Built with Swift.

Journal of imaging informatics in medicine·2026
Same author

Association between thrombus neutrophil extracellular trap content and ischemic stroke recurrence.

Journal of thrombosis and haemostasis : JTH·2026
Same author

Different Long-Term Outcomes According to Thrombus Histology in Patients With Acute Ischemic Stroke.

Journal of stroke·2026
Same author

Combined Oral Anticoagulant and Antiplatelet for Atrial Fibrillation and Cerebral Atherosclerosis: A Meta-Analysis.

Journal of stroke·2026

Related Experiment Video

Updated: Nov 28, 2025

Growth and Electrostatic/chemical Properties of Metal/LaAlO3/SrTiO3 Heterostructures
11:54

Growth and Electrostatic/chemical Properties of Metal/LaAlO3/SrTiO3 Heterostructures

Published on: February 8, 2018

10.6K

Engineered spin-orbit interactions in LaAlO3/SrTiO3-based 1D serpentine electron waveguides.

Megan Briggeman1,2, Jianan Li1,2, Mengchen Huang1,2

  • 1Department of Physics and Astronomy, University of Pittsburgh, Pittsburgh, PA 15260, USA.

Science Advances
|November 26, 2020
PubMed
Summary

Researchers engineered quantum matter in one-dimensional (1D) nanostructures. These LaAlO3/SrTiO3 electron waveguides exhibit unique spin-dependent shifts and fractional conductance plateaus, paving the way for 1D solid-state quantum simulation.

More Related Videos

Experimental Methods for Spin- and Angle-Resolved Photoemission Spectroscopy Combined with Polarization-Variable Laser
09:00

Experimental Methods for Spin- and Angle-Resolved Photoemission Spectroscopy Combined with Polarization-Variable Laser

Published on: June 28, 2018

10.2K
Tuning Oxide Properties by Oxygen Vacancy Control During Growth and Annealing
06:44

Tuning Oxide Properties by Oxygen Vacancy Control During Growth and Annealing

Published on: June 9, 2023

3.5K

Related Experiment Videos

Last Updated: Nov 28, 2025

Growth and Electrostatic/chemical Properties of Metal/LaAlO3/SrTiO3 Heterostructures
11:54

Growth and Electrostatic/chemical Properties of Metal/LaAlO3/SrTiO3 Heterostructures

Published on: February 8, 2018

10.6K
Experimental Methods for Spin- and Angle-Resolved Photoemission Spectroscopy Combined with Polarization-Variable Laser
09:00

Experimental Methods for Spin- and Angle-Resolved Photoemission Spectroscopy Combined with Polarization-Variable Laser

Published on: June 28, 2018

10.2K
Tuning Oxide Properties by Oxygen Vacancy Control During Growth and Annealing
06:44

Tuning Oxide Properties by Oxygen Vacancy Control During Growth and Annealing

Published on: June 9, 2023

3.5K

Area of Science:

  • Condensed Matter Physics
  • Quantum Matter
  • Nanostructures

Background:

  • One-dimensional (1D) electronic systems are crucial for exploring exotic quantum matter phases.
  • LaAlO3/SrTiO3 heterostructures provide a platform for creating novel electronic systems.

Purpose of the Study:

  • To investigate the properties of quasi-1D nanostructures with imposed sinusoidal transverse spatial modulation.
  • To explore engineered spin-orbit interactions and electron-electron scattering in these systems.

Main Methods:

  • Fabrication of quasi-1D nanostructures based on LaAlO3/SrTiO3 electron waveguides.
  • Imposition of a sinusoidal transverse spatial modulation on the waveguides.
  • Characterization of subband spectra and electronic transport properties.

Main Results:

  • Observed a significant spin-dependent shift (∼7 T) in subband minima.
  • Detected fractional conductance plateaus, indicating enhanced electron-electron scattering.
  • Demonstrated unique dispersive features in the subband spectra.

Conclusions:

  • The observed phenomena are attributed to engineered spin-orbit interaction and enhanced electron-electron scattering.
  • These engineered quantum wires serve as a valuable tool for 1D solid-state quantum simulation.
  • The study advances the understanding and design of new quantum matter.