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: Two-Bond Coupling (Geminal Coupling)01:20

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

1.5K
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...
1.5K
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
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...
1.3K
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
NMR Spectroscopy: Spin–Spin Coupling01:08

NMR Spectroscopy: Spin–Spin Coupling

3.5K
The spin state of an NMR-active nucleus can have a slight effect on its immediate electronic environment. This effect propagates through the intervening bonds and affects the electronic environments of NMR-active nuclei up to three bonds away; occasionally, even farther. This phenomenon is called spin–spin coupling or J-coupling. Coupling interactions are mutual and result in small changes in the absorption frequencies of both nuclei involved. While nuclei of the same element are involved...
3.5K
Magnetic Field Due to Two Straight Wires01:18

Magnetic Field Due to Two Straight Wires

5.2K
Consider two parallel straight wires carrying a current of 10 A and 20 A in the same direction and separated by a distance of 20 cm. Calculate the magnetic field at a point "P2", midway between the wires. Also, evaluate the magnetic field when the direction of the current is reversed in the second wire.
5.2K

You might also read

Related Articles

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

Sort by
Same author

An active and multifunctional curcumin-zein composite film for shelf-life extension in sustainable food packaging.

Food chemistry: X·2026
Same author

Synergistic effects of cationic trimeric fracturing fluids on gas-coal wettability modulation and pore structure remodeling: Experimental and molecular dynamics investigations.

Environmental research·2026
Same author

Surface Magnon Propagation in a van der Waals Antiferromagnet.

Physical review letters·2026
Same author

UCHL3 depletion inhibits gastric cancer progression and enhances palbociclib sensitivity by regulating the AKT/CCND1 signaling axis via ENO1 ubiquitination.

Cell death & disease·2025
Same author

Predictive Model of Risk Factors for Secondary Venous Thromboembolism in Patients After Craniotomy.

Clinical and applied thrombosis/hemostasis : official journal of the International Academy of Clinical and Applied Thrombosis/Hemostasis·2025
Same author

Near-Infrared Light-Driven Photocatalytic Antibacterial Activity of CaCO<sub>3</sub>/C/PDA Nanocomposites against Gram-Negative Bacteria.

ACS applied bio materials·2025
Same journal

Unlocking the capacity of Mn-based Prussian blue cathodes in capacitive deionization.

Nature communications·2026
Same journal

Scaling biodiversity-stability relationships from populations to meta-communities across trophic levels.

Nature communications·2026
Same journal

Thermodynamically programmed one-pot CRISPR platform for point-of-care SNP genotyping.

Nature communications·2026
Same journal

Engineering all-organic electrocatalysts with asymmetric dual-active sites for uncommon oxygen-evolving pathway.

Nature communications·2026
Same journal

Rapid GC content evolution in rice through GC-biased gene conversion and selection for translation efficiency.

Nature communications·2026
Same journal

Declines in organic matter persistence with increased soil carbon.

Nature communications·2026
See all related articles

Related Experiment Video

Updated: May 6, 2026

Fabrication and Operation of a Nano-Optical Conveyor Belt
11:10

Fabrication and Operation of a Nano-Optical Conveyor Belt

Published on: August 26, 2015

11.3K

Omnidirectional spin-wave nanograting coupler.

Haiming Yu1, G Duerr, R Huber

  • 1Physik Department E10, Technische Universität München, James-Franck-Strasse 1, D-85747 Garching b. München, Germany.

Nature Communications
|November 6, 2013
PubMed
Summary
This summary is machine-generated.

Researchers developed a magnonic grating coupler for efficient spin wave emission, advancing integrated magnonics and cellular nonlinear networks for low-power computing. This innovation enables omnidirectional emission of short-wavelength spin waves, crucial for future electronic devices.

More Related Videos

Demonstration of Spin-Multiplexed and Direction-Multiplexed All-Dielectric Visible Metaholograms
08:48

Demonstration of Spin-Multiplexed and Direction-Multiplexed All-Dielectric Visible Metaholograms

Published on: September 25, 2020

5.3K
Implementation of a Reference Interferometer for Nanodetection
16:11

Implementation of a Reference Interferometer for Nanodetection

Published on: April 26, 2014

8.8K

Related Experiment Videos

Last Updated: May 6, 2026

Fabrication and Operation of a Nano-Optical Conveyor Belt
11:10

Fabrication and Operation of a Nano-Optical Conveyor Belt

Published on: August 26, 2015

11.3K
Demonstration of Spin-Multiplexed and Direction-Multiplexed All-Dielectric Visible Metaholograms
08:48

Demonstration of Spin-Multiplexed and Direction-Multiplexed All-Dielectric Visible Metaholograms

Published on: September 25, 2020

5.3K
Implementation of a Reference Interferometer for Nanodetection
16:11

Implementation of a Reference Interferometer for Nanodetection

Published on: April 26, 2014

8.8K

Area of Science:

  • Emerging nanotechnology
  • Solid-state physics
  • Spintronics

Background:

  • Magnonics offers functionalities beyond semiconductor technology for tasks like image processing.
  • Efficient coupling of spin waves to microelectronics is a significant challenge.
  • Existing spin-wave excitation methods lack scalability and directional control.

Purpose of the Study:

  • To demonstrate a novel grating coupler for efficient, multidirectional spin-wave emission.
  • To overcome limitations of current spin-wave excitation techniques.
  • To enable integrated magnonics and cellular nonlinear networks.

Main Methods:

  • Fabrication of a grating coupler using periodically nanostructured magnets.
  • Excitation of short-wavelength spin waves using the grating coupler.
  • Systematic exploration of material dependence, lattice constants, and magnetic field effects.

Main Results:

  • The magnonic grating coupler provokes multidirectional emission of short-wavelength spin waves.
  • A giant enhancement in spin-wave amplitude was observed compared to bare microwave antennas.
  • The coupler demonstrated greater versatility than photonic and plasmonic gratings.

Conclusions:

  • Magnonic grating couplers are a versatile and efficient method for spin-wave excitation.
  • This technology facilitates the conversion of antennas into omnidirectional emitters.
  • The findings are key for advancing cellular nonlinear networks and integrated magnonics.