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 Damping01:17

Magnetic Damping

Eddy currents can produce significant drag on motion, called magnetic damping. For instance, when a metallic pendulum bob swings between the poles of a strong magnet, significant drag acts on the bob as it enters and leaves the field, quickly damping the motion.
If, however, the bob is a slotted metal plate, the magnet produces a much smaller effect. When a slotted metal plate enters the field, an emf is induced by the change in flux; however, it is less effective because the slots limit the...
Magnetic Force01:18

Magnetic Force

In addition to the electric forces between electric charges, moving electric charges exert magnetic forces on each other. A magnetic field is created by a moving charge or a group of moving charges known as the electric current. A magnetic force is experienced by a second current or moving charge in response to this magnetic field. Fundamentally, interactions between moving electrons in the atoms of two bodies produce magnetic forces between them.
The magnetic force acting on a moving charge...

You might also read

Related Articles

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

Sort by
Same author

Gravity-driven modified whole-lung lavage improves procedural efficiency in pulmonary alveolar proteinosis.

Journal of thoracic disease·2026
Same author

Ultra-Broadband Microwave Absorption and Programmable Multispectral Camouflage Enabled by Neural-Network-Driven Impedance-Gradient Metadevices.

Nano-micro letters·2026
Same author

Dual-Regulation of Na Deposition Kinetics via Sodiophilic ZnO/Carbon Cloth Host and Magnetohydrodynamic Convection for Long-Life Sodium Metal Anodes.

ACS applied materials & interfaces·2026
Same author

Multiscale Structural Engineering in Electromagnetic Wave Absorption Materials: From Atomic Defects to Macroscopic Structures.

Small (Weinheim an der Bergstrasse, Germany)·2026
Same author

Preliminary exploration of a digital model for differential diagnosis of tracheobronchopathia osteochondroplastica: a retrospective cohort study.

BMC pulmonary medicine·2026
Same author

A Multi-Scale Cross-Band Defense System Integrating Decoupled Visible, Dynamic Infrared Camouflage and Electromagnetic Shielding.

Nano-micro letters·2026

Related Experiment Video

Updated: Jun 23, 2026

Simultaneous Synthesis of Single-walled Carbon Nanotubes and Graphene in a Magnetically-enhanced Arc Plasma
09:48

Simultaneous Synthesis of Single-walled Carbon Nanotubes and Graphene in a Magnetically-enhanced Arc Plasma

Published on: February 2, 2012

Magnetic carbon nanofoams.

Shandong Li1, Guangbin Ji, Liya Lü

  • 1Department of Physics, Fujian Normal University, Fuzhou 350007, China.

Journal of Nanoscience and Nanotechnology
|May 16, 2009
PubMed
Summary

Researchers developed carbon nanofoams (CNFs) with unique nested structures. These novel carbon materials exhibit intrinsic room-temperature ferromagnetism, paving the way for new magnetic applications.

Area of Science:

  • Materials Science
  • Nanotechnology
  • Condensed Matter Physics

Background:

  • Carbon-based nanomaterials offer unique properties.
  • Investigating novel carbon nanostructures is crucial for advanced applications.
  • Understanding the origins of magnetism in carbon materials is an ongoing challenge.

Purpose of the Study:

  • To synthesize and characterize carbon nanofoams (CNFs).
  • To investigate the structural properties of the synthesized CNFs.
  • To determine the origin of ferromagnetism in CNFs.

Main Methods:

  • Synthesis of CNFs via air cooling of acetylene pyrolysate.
  • Microstructural analysis of CNF particles, revealing nested carbon balls.
  • Magnetic property measurements at room temperature.

More Related Videos

Fabrication of a Functionalized Magnetic Bacterial Nanocellulose with Iron Oxide Nanoparticles
08:59

Fabrication of a Functionalized Magnetic Bacterial Nanocellulose with Iron Oxide Nanoparticles

Published on: May 26, 2016

Fabrication of 3D Carbon Microelectromechanical Systems (C-MEMS)
08:01

Fabrication of 3D Carbon Microelectromechanical Systems (C-MEMS)

Published on: June 17, 2017

Related Experiment Videos

Last Updated: Jun 23, 2026

Simultaneous Synthesis of Single-walled Carbon Nanotubes and Graphene in a Magnetically-enhanced Arc Plasma
09:48

Simultaneous Synthesis of Single-walled Carbon Nanotubes and Graphene in a Magnetically-enhanced Arc Plasma

Published on: February 2, 2012

Fabrication of a Functionalized Magnetic Bacterial Nanocellulose with Iron Oxide Nanoparticles
08:59

Fabrication of a Functionalized Magnetic Bacterial Nanocellulose with Iron Oxide Nanoparticles

Published on: May 26, 2016

Fabrication of 3D Carbon Microelectromechanical Systems (C-MEMS)
08:01

Fabrication of 3D Carbon Microelectromechanical Systems (C-MEMS)

Published on: June 17, 2017

Main Results:

  • Carbon nanofoams were successfully prepared with particles composed of 2-4 nested carbon balls (~300 nm diameter).
  • Carbon sheets with negative Gaussian curvature were observed within the carbon balls.
  • Intrinsic room-temperature ferromagnetism was confirmed in CNFs, with a saturation magnetization of 0.11 emu/g at 300 K.
  • The ferromagnetism is attributed to the unique nested structure of the carbon balls, not impurities.

Conclusions:

  • The synthesized carbon nanofoams possess a unique nested structure.
  • The observed room-temperature ferromagnetism originates from the intrinsic structure of the carbon balls.
  • These findings suggest potential applications for CNFs in magnetic materials and nanotechnology.