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

Magnetic Fields01:27

Magnetic Fields

7.1K
A moving charge or a current creates a magnetic field in the surrounding space, in addition to its electric field. The magnetic field exerts a force on any other moving charge or current that is present in the field. Like an electric field, the magnetic field is also a vector field. At any position, the direction of the magnetic field is defined as the direction in which the north pole of a compass needle points.
A magnetic field is defined by the force that a charged particle experiences...
7.1K
Ferromagnetism01:31

Ferromagnetism

2.9K
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...
2.9K
Magnetostatic Boundary Conditions01:28

Magnetostatic Boundary Conditions

1.6K
An electric field suffers a discontinuity at a surface charge. Similarly, a magnetic field is discontinuous at a surface current. The perpendicular component of a magnetic field is continuous across the interface of two magnetic mediums. In contrast, its parallel component, perpendicular to the current, is discontinuous by the amount equal to the product of the vacuum permeability and the surface current. Like the scalar potential in electrostatics, the vector potential is also continuous...
1.6K
Magnetic Susceptibility and Permeability01:31

Magnetic Susceptibility and Permeability

2.2K
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...
2.2K
Paramagnetism01:30

Paramagnetism

3.0K
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...
3.0K
Diamagnetism01:26

Diamagnetism

2.9K
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....
2.9K

You might also read

Related Articles

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

Sort by
Same author

Rhein antagonizes glucocorticoid receptor signaling to activate SIRT1-dependent thermogenesis in brown adipose tissue and ameliorate obesity.

Phytomedicine : international journal of phytotherapy and phytopharmacology·2026
Same author

Bioinspired milliscale near-boundary undulatory motion for fluid transport and adhesive locomotion.

Science advances·2026
Same author

Inhalational therapy of pulmonary infection <i>via</i> macrophage-targeted nanoemulsions.

Acta pharmaceutica Sinica. B·2026
Same author

A Data-Driven Inverse Design Methodology for Magnetic Soft Millirobots Navigating in Confined Spaces.

Advanced science (Weinheim, Baden-Wurttemberg, Germany)·2026
Same author

CD40-TRAF2/3/5 Signaling Promotes Cardiac Repair by Mediating Macrophage Efferocytosis After Myocardial Infarction.

Circulation·2026
Same author

The Gα protein FveGPA1 regulates inflorescence architecture via the FveBRI1-mediated brassinosteroid pathway in strawberry.

The Plant cell·2026
Same journal

Erratum for the Research Article "Assessing the health risks of rice cadmium content standards in China" by H. Chu <i>et al</i>.

Science advances·2026
Same journal

Erratum for the Research Article "Developmental regulation of Erk signaling by mitotic kinases" by F. Chen <i>et al</i>.

Science advances·2026
Same journal

Magnetically levitated metasurface enabling tangible and bidirectional human-machine interaction.

Science advances·2026
Same journal

A general photoinduced manganese-catalyzed platform for the sequential difunctionalization of [1.1.1]propellane.

Science advances·2026
Same journal

Turning sound and force into light with AlN:Mn<sup>2+</sup> mechanoluminescence.

Science advances·2026
Same journal

Extreme dominance of Earth-origin heavy ions in the intense ring current near the Earth during the May 2024 super geomagnetic storm.

Science advances·2026
See all related articles

Related Experiment Video

Updated: Jan 11, 2026

Optimized Setup and Protocol for Magnetic Domain Imaging with In Situ Hysteresis Measurement
09:43

Optimized Setup and Protocol for Magnetic Domain Imaging with In Situ Hysteresis Measurement

Published on: November 7, 2017

9.8K

Stable magnetic soft structures.

Hong Wang1,2, Yunming Zhang3, Xu Liu1

  • 1Department of Mechanical and Aerospace Engineering, The Hong Kong University of Science and Technology, Hong Kong, China.

Science Advances
|November 14, 2025
PubMed
Summary
This summary is machine-generated.

Anisotropic magnetic soft structures offer enhanced stability and control for medical devices, overcoming challenges posed by magnetic field misalignment and imaging limitations. This design improves device safety and functionality in complex environments.

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

3.2K
Methods of Ex Situ and In Situ Investigations of Structural Transformations: The Case of Crystallization of Metallic Glasses
08:55

Methods of Ex Situ and In Situ Investigations of Structural Transformations: The Case of Crystallization of Metallic Glasses

Published on: June 7, 2018

8.9K

Related Experiment Videos

Last Updated: Jan 11, 2026

Optimized Setup and Protocol for Magnetic Domain Imaging with In Situ Hysteresis Measurement
09:43

Optimized Setup and Protocol for Magnetic Domain Imaging with In Situ Hysteresis Measurement

Published on: November 7, 2017

9.8K
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

3.2K
Methods of Ex Situ and In Situ Investigations of Structural Transformations: The Case of Crystallization of Metallic Glasses
08:55

Methods of Ex Situ and In Situ Investigations of Structural Transformations: The Case of Crystallization of Metallic Glasses

Published on: June 7, 2018

8.9K

Area of Science:

  • Robotics
  • Biomedical Engineering
  • Materials Science

Background:

  • Magnetic soft structures are promising for minimally invasive medical devices due to their versatility.
  • Unintended deformations under fluctuating magnetic fields and imaging limitations pose significant challenges for device control and pose estimation.
  • Anatomical boundaries can further complicate device operation by causing misalignment with external magnetic fields.

Purpose of the Study:

  • To investigate the stability of slender magnetic soft structures under misaligned magnetic fields.
  • To develop an anisotropic design that enhances structural stiffness and control.
  • To demonstrate the robustness and applicability of these structures in various medical device configurations.

Main Methods:

  • Anisotropic design of slender magnetic soft structures using flexural joints.
  • Characterization of bending and torsional stiffness compared to isotropic beams.
  • Validation of structural robustness through functional demonstrations.

Main Results:

  • The anisotropic design achieved approximately 52-fold higher bending stiffness and 18-fold higher torsional stiffness compared to isotropic beams.
  • The developed structure serves as a versatile building block for diverse configurations including tentacles, helices, and expandable devices.
  • Demonstrated robustness through self-propulsion, guidewire navigation with reduced insertion force, and peristaltic locomotion.

Conclusions:

  • Anisotropic magnetic soft structures significantly enhance stability and control in challenging environments.
  • This design advancement contributes to the development of safer and more reliable minimally invasive medical devices.
  • The versatile building block approach facilitates the creation of complex, functional soft robotic systems for medical applications.