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

Motion Of A Charged Particle In A Magnetic Field01:22

Motion Of A Charged Particle In A Magnetic Field

A charged particle experiences a force when moving through a magnetic field. Consider the field to be uniform and the charged particle to move perpendicular to it. If the field is in a vacuum, the magnetic field is the dominant factor determining the motion. Since the magnetic force is perpendicular to the direction of motion, a charged particle follows a curved path. The particle continues to follow this curved path until it forms a complete circle. Another way to look at this is that the...
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...
Torque On A Current Loop In A Magnetic Field01:13

Torque On A Current Loop In A Magnetic Field

The most common application of magnetic force on current-carrying wires is in electric motors. These consist of loops of wire, which are placed between the magnets with a magnetic field. When current flows through the loops, the magnetic field applies torque, which causes the shaft to rotate, thus converting electrical energy to mechanical energy.
Consider a rectangular current-carrying loop containing N turns of wire, placed in a uniform magnetic field. The net force on a current-carrying loop...
Magnetic Vector Potential01:15

Magnetic Vector Potential

In electrostatics, the electric field can be written as the negative gradient of the potential. In magnetostatics, the zero divergence of the magnetic field ensures that the magnetic field can be expressed as the curl of a vector potential. This potential is known as the magnetic vector potential.
Consider an ideal solenoid with n turns per unit length and radius R. If I is the current through the solenoid, the magnetic field inside the solenoid is expressed as the product of vacuum...
Magnetic Field due to Moving Charges01:23

Magnetic Field due to Moving Charges

A stationary charge creates and interacts with the electric field, while a moving charge creates a magnetic field.
Consider a point charge moving with a constant velocity. Like the electric field, the magnetic field at any point is directly proportional to the magnitude of the charge and inversely proportional to the square of the distance between the source point and the field point. However, unlike the electric field, the magnetic field is always perpendicular to the plane containing the line...

You might also read

Related Articles

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

Sort by
Same author

State-dependent neuronal activities of glutamatergic and GABAergic neurons in the rat insular cortex during a cue-guided lever manipulation task involving saccharin reward.

Chemical senses·2026
Same author

Axial Length Growth Reference Curves and LMS Parameters for Japanese Children and Adolescents Aged 4-20 Years: The TMM BirThree Cohort Study.

Ophthalmic & physiological optics : the journal of the British College of Ophthalmic Opticians (Optometrists)·2026
Same author

Analytical method validation and feasibility of salivary pregabalin measurement in Japanese volunteers: A pilot study.

Drug discoveries & therapeutics·2026
Same author

Individual Matching Support in Community Dementia Care: A Reflexive Thematic Analysis of Team Orange in Sapporo City.

Psychogeriatrics : the official journal of the Japanese Psychogeriatric Society·2026
Same author

Team Orange in Sapporo: A Community-Based Support Model for People Living With Dementia and Its 6-Month Outcomes.

Psychogeriatrics : the official journal of the Japanese Psychogeriatric Society·2026
Same author

Self-disclosure to Peers and Changes in Personal Recovery in Community-dwelling People with Mental Disorders: A One-year Longitudinal Study.

Community mental health journal·2026

Related Experiment Video

Updated: May 16, 2026

Optimized Fabrication Procedure for High-Quality Graphene-based Moiré Superlattice Devices
11:24

Optimized Fabrication Procedure for High-Quality Graphene-based Moiré Superlattice Devices

Published on: July 11, 2025

Optical motion control of maglev graphite.

Masayuki Kobayashi1, Jiro Abe

  • 1Department of Chemistry, School of Science and Engineering, Aoyama Gakuin University, 5-10-1 Fuchinobe, Chuo-ku, Sagamihara, Kanagawa 252-5258, Japan.

Journal of the American Chemical Society
|December 14, 2012
PubMed
Summary
This summary is machine-generated.

Researchers demonstrate moving levitating graphite with light. This photothermal effect converts light energy into rotational motion, enabling new light energy conversion systems.

More Related Videos

Gain-compensation Methodology for a Sinusoidal Scan of a Galvanometer Mirror in Proportional-Integral-Differential Control Using Pre-emphasis Techniques
09:01

Gain-compensation Methodology for a Sinusoidal Scan of a Galvanometer Mirror in Proportional-Integral-Differential Control Using Pre-emphasis Techniques

Published on: April 4, 2017

Cooling an Optically Trapped Ultracold Fermi Gas by Periodical Driving
11:21

Cooling an Optically Trapped Ultracold Fermi Gas by Periodical Driving

Published on: March 30, 2017

Related Experiment Videos

Last Updated: May 16, 2026

Optimized Fabrication Procedure for High-Quality Graphene-based Moiré Superlattice Devices
11:24

Optimized Fabrication Procedure for High-Quality Graphene-based Moiré Superlattice Devices

Published on: July 11, 2025

Gain-compensation Methodology for a Sinusoidal Scan of a Galvanometer Mirror in Proportional-Integral-Differential Control Using Pre-emphasis Techniques
09:01

Gain-compensation Methodology for a Sinusoidal Scan of a Galvanometer Mirror in Proportional-Integral-Differential Control Using Pre-emphasis Techniques

Published on: April 4, 2017

Cooling an Optically Trapped Ultracold Fermi Gas by Periodical Driving
11:21

Cooling an Optically Trapped Ultracold Fermi Gas by Periodical Driving

Published on: March 30, 2017

Area of Science:

  • Materials Science
  • Physics
  • Optics

Background:

  • Graphite is a known diamagnetic material.
  • Diamagnetic materials can be levitated in strong magnetic fields.

Purpose of the Study:

  • To show that magnetically levitating pyrolytic graphite can be moved using light.
  • To demonstrate a novel optical motion control system.
  • To explore the conversion of light energy into rotational kinetic energy.

Main Methods:

  • Utilizing NdFeB permanent magnets and a light source.
  • Employing photothermally induced changes in graphite's magnetic susceptibility for optical motion control.
  • Investigating the photothermal property for energy conversion.

Main Results:

  • Magnetically levitating pyrolytic graphite was successfully moved using simple photoirradiation.
  • An optical motion control system was developed using only permanent magnets and a light source.
  • The levitating graphite disk achieved over 200 rpm rotation under sunlight, demonstrating light-to-rotational kinetic energy conversion.

Conclusions:

  • Photoirradiation provides a novel method for controlling the motion of levitating diamagnetic materials.
  • The photothermal effect in graphite enables efficient light energy conversion into mechanical work.
  • This research opens possibilities for developing new light-driven energy conversion systems.