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

Atomic Nuclei: Nuclear Relaxation Processes01:23

Atomic Nuclei: Nuclear Relaxation Processes

In the absence of an external magnetic field, nuclear spin states are degenerate and randomly oriented. When a magnetic field is applied, the spins begin to precess and orient themselves along (lower energy) or against (higher energy) the direction of the field. At equilibrium, a slight excess population of spins exists in the lower energy state. Because the direction of the magnetic field is fixed as the z-axis,  the precessing magnetic moments are randomly oriented around the z-axis. This...
Atomic Nuclei: Magnetic Resonance01:05

Atomic Nuclei: Magnetic Resonance

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...
Potential Due to a Magnetized Object01:24

Potential Due to a Magnetized Object

Magnetic dipoles in magnetic materials are aligned when placed under an external magnetic field. For paramagnets and ferromagnets, dipole alignment occurs in the direction of the magnetic field. However, the dipoles align opposite to the field in the case of diamagnets. This state of magnetic polarization due to the external field is called magnetization. Magnetization is defined as the dipole moment per unit volume. It plays a similar role to polarization in electrostatics.
The vector...
Voltammetric Techniques: Linear-Scan (E vs Time)01:12

Voltammetric Techniques: Linear-Scan (E vs Time)

Polarography is a classical voltammetric technique used to analyze electrochemical reactions. This method applies a linear potential sweep to a dropping mercury electrode (DME), and the resulting current is measured. A dropping mercury electrode is commonly used as the working electrode in polarography. It consists of a capillary tube filled with mercury, where the tiny droplet forms at the tip. This droplet continuously drops from the capillary, creating a new electrode surface for each...
Insensitive Nuclei Enhanced by Polarization Transfer (INEPT)01:15

Insensitive Nuclei Enhanced by Polarization Transfer (INEPT)

Insensitive Nuclei Enhanced by Polarization Transfer (INEPT) is an advanced Nuclear Magnetic Resonance (NMR) technique specifically designed to detect and enhance the signals of low-abundance nuclei, such as carbon-13 and nitrogen-15, in small molecules. The fundamental principle behind INEPT is the transfer of polarization from a more abundant and highly polarizable nucleus, typically hydrogen-1, to the low-abundance nucleus of interest. This process effectively boosts the NMR signal of the...
Potential Due to a Polarized Object01:29

Potential Due to a Polarized Object

A neutral atom consists of a positively charged nucleus surrounded by a negatively charged electron cloud. When placed in an external electric field, the external electric force pulls the electrons and nucleus apart, opposite to the intrinsic attraction between the nucleus and the electrons. The opposing forces balance each other with a slight shift between the center of masses of the nucleus and the electron cloud, resulting in a polarized atom. On the other hand, a few molecules, like water,...

You might also read

Related Articles

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

Sort by
Same author

Advances in Nanotechnology-Based Immunomodulatory Strategies for the Treatment of Allergic Rhinitis.

International journal of nanomedicine·2026
Same author

Synergistic antibacterial activity and mechanism of arginine combined with florfenicol against <i>Escherichia coli</i>.

Virulence·2026
Same author

Driving pathways of university teachers' professional development: the roles of perceived team leadership, innovative self-efficacy, and organizational innovation climate.

Frontiers in psychology·2026
Same author

A dynamic nomogram for predicting axillary pathological complete response and its prognostic value in HER2-positive breast cancer.

Frontiers in oncology·2026
Same author

Economic and Regional Disparities in Critical Care Ultrasound Training, Equipment Access, and Implementation Barriers in China: A Nationwide Cross-Sectional Survey.

Critical care medicine·2026
Same author

Fluoride-free synthesis of large-pore ITQ-27 aluminosilicate zeolite with a tunable composition and enhanced methanol-to-propylene performance.

Chemical communications (Cambridge, England)·2026
Same journal

Gaussian-modulated continuous-variable quantum key distribution over 60 km fiber using an integrated silicon photonic receiver.

Optics letters·2026
Same journal

E2E-OCT: end-to-end joint learning model using optical coherence tomography images for vocal cord leukoplakia diagnosis.

Optics letters·2026
Same journal

Holographic generation of panoramic 3D scenes by concave ellipsoidal mirror reflection.

Optics letters·2026
Same journal

Dual-pilot phase recovery with pair-wise maximum-ratio combining for coherent PONs.

Optics letters·2026
Same journal

Mapping the whispering gallery modes of a CaF<sub>2</sub> disk resonator with half-tapered fibers to estimate the fundamental mode volume.

Optics letters·2026
Same journal

Quantitative estimation of deep-subwavelength scale via dark-field scattering axial energy concentration decay profiles.

Optics letters·2026
See all related articles

Related Experiment Video

Updated: May 17, 2026

Hyperpolarized Xenon for NMR and MRI Applications
16:20

Hyperpolarized Xenon for NMR and MRI Applications

Published on: September 6, 2012

Polarization-gradient optical pumping in an atomic magnetometer.

Xiaona Liu, Yujie Sun, Zhaoying Wang

    Optics Letters
    |May 15, 2026
    PubMed
    Summary
    This summary is machine-generated.

    This study introduces a new method using counter-propagating light beams to eliminate "dead zones" in atomic magnetometers, improving magnetic field measurement accuracy across various angles.

    More Related Videos

    In Situ Measurement of Vacuum Window Birefringence using 25Mg+ Fluorescence
    07:03

    In Situ Measurement of Vacuum Window Birefringence using 25Mg+ Fluorescence

    Published on: June 13, 2020

    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

    Related Experiment Videos

    Last Updated: May 17, 2026

    Hyperpolarized Xenon for NMR and MRI Applications
    16:20

    Hyperpolarized Xenon for NMR and MRI Applications

    Published on: September 6, 2012

    In Situ Measurement of Vacuum Window Birefringence using 25Mg+ Fluorescence
    07:03

    In Situ Measurement of Vacuum Window Birefringence using 25Mg+ Fluorescence

    Published on: June 13, 2020

    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

    Area of Science:

    • Atomic Physics
    • Quantum Optics
    • Sensor Technology

    Background:

    • High-precision atomic magnetometers suffer from
    • dead zones
    • where magnetic field information is lost at specific angles.
    • This limitation hinders their spatial response range and accuracy.

    Purpose of the Study:

    • To propose and experimentally validate a novel scheme to suppress dead zones in Mz/Mx atomic magnetometers.
    • To enhance the spatial response and reliability of atomic magnetometry.

    Main Methods:

    • Implementation of a polarization-gradient optical pumping field using counter-propagating lin⊥lin beams.
    • Experimental verification of the proposed scheme.
    • Quantitative explanation using a multipole-based model with a spatially averaged density matrix.

    Main Results:

    • The lin⊥lin scheme effectively eliminates dead zones in the transverse plane (minimum ~40% normalized signal).
    • Two noncanonical magic-angle-like directions (≈30°, 150°) were observed in the longitudinal plane.
    • The multipole-based model accurately explains the experimental observations.

    Conclusions:

    • The proposed lin⊥lin scheme offers a promising solution for eliminating dead zones in atomic magnetometers.
    • This method avoids complex polarization modulation or multi-cell setups.
    • Potential for significant improvement in the spatial response range of compact atomic magnetometry.