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

Nuclear Transmutation03:20

Nuclear Transmutation

20.7K
Nuclear transmutation is the conversion of one nuclide into another. It can occur by the radioactive decay of a nucleus, or the reaction of a nucleus with another particle. The first manmade nucleus was produced in Ernest Rutherford’s laboratory in 1919 by a transmutation reaction, the bombardment of one type of nuclei with other nuclei or with neutrons. Rutherford bombarded nitrogen-14 atoms with high-speed α particles from a natural radioactive isotope of radium and observed...
20.7K
Group Polarization01:01

Group Polarization

39.2K
Group polarization is the strengthening of an original group attitude following the discussion of views within a group (Teger & Pruitt, 1967). That is, if a group initially favors a viewpoint, after discussion the group consensus is likely a stronger endorsement of the viewpoint. Conversely, if the group was initially opposed to a viewpoint, group discussion would likely lead to stronger opposition.
39.2K
Molecular Shape and Polarity03:37

Molecular Shape and Polarity

76.0K
Dipole Moment of a Molecule
76.0K
Nuclear Fusion02:45

Nuclear Fusion

33.9K
The process of converting very light nuclei into heavier nuclei is also accompanied by the conversion of mass into large amounts of energy, a process called fusion. The principal source of energy in the sun is a net fusion reaction in which four hydrogen nuclei fuse and ultimately produce one helium nucleus and two positrons.
A helium nucleus has a mass that is 0.7% less than that of four hydrogen nuclei; this lost mass is converted into energy during the fusion. This reaction produces about...
33.9K
Nuclear Stability03:18

Nuclear Stability

23.4K
Protons and neutrons, collectively called nucleons, are packed together tightly in a nucleus. With a radius of about 10−15 meters, a nucleus is quite small compared to the radius of the entire atom, which is about 10−10 meters. Nuclei are extremely dense compared to bulk matter, averaging 1.8 × 1014 grams per cubic centimeter. If the earth’s density were equal to the average nuclear density, the earth’s radius would be only about 200 meters.
To hold positively charged protons together...
23.4K
Non-nuclear Inheritance01:29

Non-nuclear Inheritance

23.3K
Most DNA resides in the nucleus of a cell. However, some organelles in the cell cytoplasm⁠—such as chloroplasts and mitochondria⁠—also have their own DNA. These organelles replicate their DNA independently of the nuclear DNA of the cell in which they reside. Non-nuclear inheritance describes the inheritance of genes from structures other than the nucleus.
23.3K

You might also read

Related Articles

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

Sort by
Same author

Surface Magnon Propagation in a van der Waals Antiferromagnet.

Physical review letters·2026
Same author

Controlled colloidal synthesis of anisotropic mixed-metal chalcohalides: insights into morphology and phase evolution.

Nanoscale·2025
Same author

Spin-Polarized Electron Transport Promotes the Oxygen Reduction Reaction.

ACS nano·2025
Same author

Preconditioning of sediment failure by astronomically paced weak-layer deposition.

Nature communications·2025
Same author

Co-assembly of Block Copolymers and Cobalt Ferrite Nanoparticles for Magnetic Material Design.

Chemistry of materials : a publication of the American Chemical Society·2025
Same author

Deterministic switching of antiferromagnetic spin textures by nonlinear magnons.

Nature communications·2025

Related Experiment Video

Updated: Feb 12, 2026

Preparation of Fungal and Plant Materials for Structural Elucidation Using Dynamic Nuclear Polarization Solid-State NMR
09:37

Preparation of Fungal and Plant Materials for Structural Elucidation Using Dynamic Nuclear Polarization Solid-State NMR

Published on: February 12, 2019

8.0K

High-Field Liquid-State Dynamic Nuclear Polarization in Microliter Samples.

Dongyoung Yoon1, Alexandros I Dimitriadis1,2, Murari Soundararajan1

  • 1Institute of Physics , École Polytechnique Fédérale de Lausanne , CH-1015 Lausanne , Switzerland.

Analytical Chemistry
|April 6, 2018
PubMed
Summary

This study introduces a novel method for liquid-state dynamic nuclear polarization (DNP) without microwave resonators, enabling NMR spectroscopy on significantly larger sample volumes. This breakthrough enhances sensitivity for analyzing biological and chemical compounds.

More Related Videos

Dissolution Dynamic Nuclear Polarization Instrumentation for Real-time Enzymatic Reaction Rate Measurements by NMR
10:54

Dissolution Dynamic Nuclear Polarization Instrumentation for Real-time Enzymatic Reaction Rate Measurements by NMR

Published on: February 23, 2016

11.2K
The Preparation of Electrohydrodynamic Bridges from Polar Dielectric Liquids
10:03

The Preparation of Electrohydrodynamic Bridges from Polar Dielectric Liquids

Published on: September 30, 2014

27.2K

Related Experiment Videos

Last Updated: Feb 12, 2026

Preparation of Fungal and Plant Materials for Structural Elucidation Using Dynamic Nuclear Polarization Solid-State NMR
09:37

Preparation of Fungal and Plant Materials for Structural Elucidation Using Dynamic Nuclear Polarization Solid-State NMR

Published on: February 12, 2019

8.0K
Dissolution Dynamic Nuclear Polarization Instrumentation for Real-time Enzymatic Reaction Rate Measurements by NMR
10:54

Dissolution Dynamic Nuclear Polarization Instrumentation for Real-time Enzymatic Reaction Rate Measurements by NMR

Published on: February 23, 2016

11.2K
The Preparation of Electrohydrodynamic Bridges from Polar Dielectric Liquids
10:03

The Preparation of Electrohydrodynamic Bridges from Polar Dielectric Liquids

Published on: September 30, 2014

27.2K

Area of Science:

  • Magnetic Resonance
  • Spectroscopy
  • Physical Chemistry

Background:

  • Dynamic Nuclear Polarization (DNP) enhances NMR sensitivity for small samples.
  • Liquid-state DNP typically requires microwave resonators, limiting sample size to <100 nL at 9 T.
  • Dielectric heating from high-power microwaves is a challenge for polar solutions.

Purpose of the Study:

  • To overcome sample size limitations in liquid-state DNP.
  • To develop a resonator-free approach for DNP using high-power microwaves.
  • To mitigate dielectric heating in polar solutions during DNP.

Main Methods:

  • Utilized a high-power gyrotron (∼150 W) for electron spin saturation without microwave resonators.
  • Designed a planar probe with a thin liquid sample (100 μm) on aluminum nitride with a gold coating for heat dissipation.
  • Employed meander or coil structures for NMR detection.

Main Results:

  • Achieved 1H DNP at 9.2 T (∼260 GHz) and room temperature with 10 μL of water (100x larger volume).
  • Obtained a 1H NMR signal enhancement of approximately -10 with 70 W microwave power.
  • Demonstrated 31P DNP in fluorobenzene with triphenylphosphine, achieving an enhancement of ∼200.

Conclusions:

  • The resonator-free DNP approach significantly expands sample volume capabilities for liquid-state NMR.
  • The planar probe design effectively manages dielectric heating in polar solutions.
  • This method offers a promising advancement for sensitive analysis of biological and chemical samples.