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

Ferromagnetism01:31

Ferromagnetism

2.8K
Materials like iron, nickel, and cobalt consist of magnetic domains, within which the magnetic dipoles are arranged parallel to each other. The magnetic dipoles are rigidly aligned in the same direction within a domain by quantum mechanical coupling among the atoms. This coupling is so strong that even thermal agitation at room temperature cannot break it. The result is that each domain has a net dipole moment. However, some materials have weaker coupling, and are ferromagnetic at lower...
2.8K
Atomic Nuclei: Magnetic Resonance01:05

Atomic Nuclei: Magnetic Resonance

1.0K
The number of nuclear spins aligned in the lower energy state is slightly greater than those in the higher energy state. In the presence of an external magnetic field, as the spins precess at the Larmor frequency, the excess population results in a net magnetization oriented along the z axis. When a pulse or a short burst of radio waves at the Larmor frequency is applied along the x axis, the coupling of frequencies causes resonance and flips the nuclear spins of the excess population from the...
1.0K
Diamagnetism01:26

Diamagnetism

2.8K
Materials consisting of paired electrons have zero net magnetic moments. However, when these materials are placed under an external magnetic field, the moments opposite to the field are induced. Such materials are called diamagnets. Diamagnetism is the response of the diamagnets when placed in an external magnetic field.
Diamagnetism was discovered by Anton Brugmans in 1778 when he observed that bismuth gets repelled by magnetic fields, thus theorizing that diamagnets get repelled by magnets....
2.8K
NMR Spectrometers: Resolution and Error Correction01:14

NMR Spectrometers: Resolution and Error Correction

960
When magnetic nuclei in a sample achieve resonance and undergo relaxation, the signal detected in NMR is an approximately exponential free induction decay. Fourier transform of an exponential decay yields a Lorentzian peak in the frequency domain. Lorentzian peaks in an NMR spectrum are defined by their amplitude, full width at half maximum, and position, where the peak width is governed by the spin-spin relaxation time alone. In real experiments, however, the applied magnetic field is rendered...
960
Magnetic Susceptibility and Permeability01:31

Magnetic Susceptibility and Permeability

2.0K
In linear magnetic materials, like paramagnets and diamagnets, magnetization is proportional to the magnetic field intensity. The constant of proportionality, a dimensionless number, is called magnetic susceptibility. The value of the susceptibility depends on the type of material.
When diamagnetic materials are placed under an external magnetic field, the moments opposite to the field are induced. Hence, the susceptibility for diamagnets has a minimal negative value of 10-5–10-6. Since...
2.0K
Paramagnetism01:30

Paramagnetism

2.9K
Paramagnets are materials with unpaired electrons that possess a finite magnetic moment. In the absence of a magnetic field, these moments are randomly oriented, and thus the net moment is zero. Under an external field, a torque acting on the moments tends to align them along the field's direction. However, the random thermal motion of electrons produces a torque opposite to the external field and tries to disorient the moments. These two competing effects align only a few moments along the...
2.9K

You might also read

Related Articles

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

Sort by
Same author

Enhanced Sensitivity of Sub-THz Thermomechanical Bolometers Exploiting Vibrational Nonlinearity.

ACS photonics·2026
Same author

Method for GHz optical helicity modulation by acoustic drum modes on a chip.

Scientific reports·2025
Same author

Terahertz Electronic and Spin Currents in Wafer-Scale Van der Waals Bi<sub>2</sub>Se<sub>3</sub>/WSe<sub>2</sub> Heterostructures and Polymorphs.

Advanced materials (Deerfield Beach, Fla.)·2025
Same author

GHz acousto-optic angular momentum with tunable topological charge.

Nature communications·2025
Same author

Cavity Optomechanics with Anderson-Localized Optical Modes.

Physical review letters·2023
Same author

Enhanced thermoelectric properties of lightly Nb doped SrTiO<sub>3</sub> thin films.

Nanoscale advances·2022

Related Experiment Video

Updated: Dec 5, 2025

Spectral and Angle-Resolved Magneto-Optical Characterization of Photonic Nanostructures
08:01

Spectral and Angle-Resolved Magneto-Optical Characterization of Photonic Nanostructures

Published on: November 21, 2019

7.5K

Ferromagnetic Resonance Assisted Optomechanical Magnetometer.

M F Colombano1,2, G Arregui1,2, F Bonell1

  • 1Catalan Institute of Nanoscience and Nanotechnology (ICN2), CSIC and BIST, Campus UAB, Bellaterra, 08193 Barcelona, Spain.

Physical Review Letters
|October 16, 2020
PubMed
Summary
This summary is machine-generated.

This study introduces a novel hybrid magnetometer. It achieves high sensitivity for detecting oscillating magnetic fields by coupling spin waves and mechanical modes.

More Related Videos

Optimizing Magnetic Force Microscopy Resolution and Sensitivity to Visualize Nanoscale Magnetic Domains
07:42

Optimizing Magnetic Force Microscopy Resolution and Sensitivity to Visualize Nanoscale Magnetic Domains

Published on: July 20, 2022

3.1K
High-Speed Magnetic Tweezers for Nanomechanical Measurements on Force-Sensitive Elements
08:50

High-Speed Magnetic Tweezers for Nanomechanical Measurements on Force-Sensitive Elements

Published on: May 12, 2023

2.6K

Related Experiment Videos

Last Updated: Dec 5, 2025

Spectral and Angle-Resolved Magneto-Optical Characterization of Photonic Nanostructures
08:01

Spectral and Angle-Resolved Magneto-Optical Characterization of Photonic Nanostructures

Published on: November 21, 2019

7.5K
Optimizing Magnetic Force Microscopy Resolution and Sensitivity to Visualize Nanoscale Magnetic Domains
07:42

Optimizing Magnetic Force Microscopy Resolution and Sensitivity to Visualize Nanoscale Magnetic Domains

Published on: July 20, 2022

3.1K
High-Speed Magnetic Tweezers for Nanomechanical Measurements on Force-Sensitive Elements
08:50

High-Speed Magnetic Tweezers for Nanomechanical Measurements on Force-Sensitive Elements

Published on: May 12, 2023

2.6K

Area of Science:

  • Physics
  • Materials Science
  • Quantum Optics

Background:

  • Optomechanical cavities offer sensitive displacement and force detection through resonant interactions.
  • Magnetometers are crucial for measuring magnetic fields, with ongoing research focused on enhancing sensitivity and speed.

Purpose of the Study:

  • To demonstrate a hybrid magnetometer leveraging magnetostriction for enhanced magnetic field sensing.
  • To explore the coupling between spin waves in ferromagnetic insulators and mechanical modes of a glass microsphere.

Main Methods:

  • Utilizing magnetostriction to couple ferromagnetic resonance (FMR) with mechanical breathing modes of a glass microsphere.
  • Achieving resonant enhancement through spectral overlap between FMR and microsphere mechanical modes.
  • Tuning FMR frequency with a static magnetic field to optimize sensor response.

Main Results:

  • Peak sensitivity of 850 pT/Hz^(1/2) achieved at 206 MHz.
  • Demonstrated sensitivity in the nT/Hz^(1/2) range up to the gigahertz frequencies.
  • Successful detection of oscillating magnetic fields using the hybrid system.

Conclusions:

  • The hybrid optomechanical magnetometer demonstrates high sensitivity and speed.
  • This system offers a promising platform for developing advanced magnetic field sensors.
  • The magnetostrictive coupling provides an effective mechanism for hybrid sensing applications.