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

Alternating Magnetic Field-Responsive Hybrid Gelatin Microgels for Controlled Drug Release09:11

Alternating Magnetic Field-Responsive Hybrid Gelatin Microgels for Controlled Drug Release

10.2K
We present a facile method to fabricate a biodegradable gelatin-based drug release platform that is magneto-thermally responsive. This was achieved by incorporating superparamagnetic iron oxide nanoparticles and poly(N-isopropylacrylamide-co-acrylamide) within a spherical gelatin micro-network crosslinked by genipin, in conjunction with an alternating magnetic field application...
10.2K
Magnetic Fields10:04

Magnetic Fields

35.4K
Source: Yong P. Chen, PhD, Department of Physics & Astronomy, College of Science, Purdue University, West Lafayette, IN
Magnetic fields can be generated by moving charges, such as an electrical current. The magnetic field generated by a current can be calculated from the Maxwell equation. In addition, magnetic objects such as bar magnets can also generate magnetic fields due to microscopic dynamics of charges inside the material. Magnetic fields will exert magnetic force on other moving...
35.4K
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
Colloids03:22

Colloids

20.7K
Children at play often make suspensions such as mixtures of mud and water, flour and water, or a suspension of solid pigments in water known as tempera paint. These suspensions are heterogeneous mixtures composed of relatively large particles that are visible to the naked eye or can be seen with a magnifying glass. They are cloudy, and the suspended particles settle out after mixing. On the other hand, a solution is a homogeneous mixture in which no settling occurs and in which the dissolved...
20.7K
Synthesis and Characterization of Supramolecular Colloids09:26

Synthesis and Characterization of Supramolecular Colloids

10.4K
A protocol for the synthesis and characterization of colloids coated with supramolecular moieties is described. These supramolecular colloids undergo self-assembly upon the activation of the hydrogen-bonds between the surface-anchored molecules by...
10.4K
Fabrication Procedures and Birefringence Measurements for Designing Magnetically Responsive Lanthanide Ion Chelating Phospholipid Assemblies09:38

Fabrication Procedures and Birefringence Measurements for Designing Magnetically Responsive Lanthanide Ion Chelating Phospholipid Assemblies

7.5K
Fabrication procedures for highly magnetically responsive lanthanide ion chelating polymolecular assemblies are presented. The magnetic response is dictated by the assembly size, which is tailored by extrusion through nanopore membranes. The assemblies' magnetic alignability and temperature-induced structural changes are monitored by birefringence measurements, a complimentary technique to nuclear magnetic resonance and small angle neutron...
7.5K

You might also read

Related Articles

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

Sort by
Same author

Gap Opening in Graphene-Based 2D Heterostructures: The Interplay of Spin-Orbit Coupling, Hybridization, and Symmetry.

ACS nano·2026
Same author

Simulation of Self-Assembled Monolayers of Polyalanine α-Helices: Development and Application of an Effective Potential for Film Structure Predictions.

ACS applied materials & interfaces·2026
Same author

Sub-wavelength extreme ultraviolet microscopy reveals domain-wall stability during ultrafast demagnetization.

Nature materials·2026
Same author

Magnetically programmable surface acoustic wave filters: device concept and predictive modeling.

Npj spintronics·2026
Same author

Hard meets soft: tuning binary ferrofluids.

Nanoscale·2026
Same author

The 2026 guided acoustic waves roadmap.

Journal of physics D: Applied physics·2026
Same journal

Erratum: Low-dimensional model for adaptive networks of spiking neurons [Phys. Rev. E 111, 014422 (2025)].

Physical review. E·2026
Same journal

Disentangling the effects of many-body forces on depletion interactions.

Physical review. E·2026
Same journal

Charge transport and mode transition in dual-energy electron beam diodes.

Physical review. E·2026
Same journal

Optimization of multisite reactions in complex compartmentalized media.

Physical review. E·2026
Same journal

Origin of geometric cohesion in nonconvex granular materials: Interplay between interdigitation and rotational constraints enhancing frictional stability.

Physical review. E·2026
Same journal

Interaction of walkers with a standing Faraday wave.

Physical review. E·2026
See all related articles

Related Experiment Video

Updated: Jan 19, 2026

Alternating Magnetic Field-Responsive Hybrid Gelatin Microgels for Controlled Drug Release
09:11

Alternating Magnetic Field-Responsive Hybrid Gelatin Microgels for Controlled Drug Release

Published on: February 13, 2016

10.2K

Field-responsive colloidal assemblies defined by magnetic anisotropy.

Gabi Steinbach1,2, Michael Schreiber1, Dennis Nissen3

  • 1Institute of Physics, Technische Universität Chemnitz, 09107 Chemnitz, Germany.

Physical Review. E
|September 11, 2019
PubMed
Summary
This summary is machine-generated.

Ferromagnetic Janus particles with complex magnetization enable diverse 2D self-assembled structures. Researchers achieved controlled formation and interconversion of branched clusters, compact clusters, and linear chains using external magnetic fields.

More Related Videos

Effect of Magnetic Fields and Lorentz Force
10:04

Effect of Magnetic Fields and Lorentz Force

Published on: April 30, 2023

35.4K
Synthesis and Characterization of Supramolecular Colloids
09:26

Synthesis and Characterization of Supramolecular Colloids

Published on: April 22, 2016

10.4K

Related Experiment Videos

Last Updated: Jan 19, 2026

Alternating Magnetic Field-Responsive Hybrid Gelatin Microgels for Controlled Drug Release
09:11

Alternating Magnetic Field-Responsive Hybrid Gelatin Microgels for Controlled Drug Release

Published on: February 13, 2016

10.2K
Effect of Magnetic Fields and Lorentz Force
10:04

Effect of Magnetic Fields and Lorentz Force

Published on: April 30, 2023

35.4K
Synthesis and Characterization of Supramolecular Colloids
09:26

Synthesis and Characterization of Supramolecular Colloids

Published on: April 22, 2016

10.4K

Area of Science:

  • Materials Science
  • Physics
  • Colloid Science

Background:

  • Particle dispersions are key for engineering functional materials via self-assembly.
  • Magnetic colloidal particles offer biocompatibility and remote controllability.
  • Standard dipolar interactions limit magnetic particle assemblies to linear structures.

Purpose of the Study:

  • To demonstrate controlled self-organization of diverse 2D structures using ferromagnetic Janus particles.
  • To explore the influence of noncollinear magnetic moment arrangements on structural complexity.
  • To investigate the role of magnetization distribution in particle self-assembly.

Main Methods:

  • Utilizing constant and low-frequency external magnetic fields.
  • Modeling particle interactions based on spheres with multiple shifted dipoles.
  • Analyzing magnetostatic equilibrium states with noncollinear magnetic moments.

Main Results:

  • Achieved controlled formation of branched clusters, compact clusters, linear chains, and dispersed single particles.
  • Demonstrated reversible interconversion between different structural arrangements.
  • Established a link between structural diversity and the inhomogeneity/spatial extension of magnetization.

Conclusions:

  • Noncollinear magnetic moments in ferromagnetic Janus particles unlock diverse 2D self-organization.
  • Anisotropic magnetization distributions offer new pathways for responsive magnetic materials.
  • Controlled manipulation of particle magnetization is crucial for advanced material design.