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

7.4K
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...
7.4K
Magnetic Field of a Solenoid01:18

Magnetic Field of a Solenoid

5.9K
A solenoid is a conducting wire coated with an insulating material, wound tightly in the form of a helical coil. The magnetic field due to a solenoid is the vector sum of the magnetic fields due to its individual turns. Therefore, for an ideal solenoid, the magnetic field within the solenoid is directly proportional to the number of turns per unit length and the current. Conversely, the magnetic field outside the solenoid is zero.
Consider a solenoid with 100 turns wrapped around a cylinder of...
5.9K
Magnetic Field Lines01:19

Magnetic Field Lines

5.8K
The representation of magnetic fields by magnetic field lines is very useful in visualizing the strength and direction of the magnetic field. Each of the magnetic field lines forms a closed loop. The field lines emerge from the north pole (N), loop around to the south pole (S), and continue through the bar magnet back to the north pole.
Magnetic field lines follow several hard-and-fast rules:
5.8K
Energy In A Magnetic Field01:24

Energy In A Magnetic Field

2.8K
If a magnetic field is sustained, there must be a current in a closed circuit or loop, implying some energy has been spent in creating the field. If this energy is not dissipated via the circuit's resistance, it is stored in the field.
Take an ideal inductor with zero resistance. Although it's practically impossible, assume that the coil's resistance is so small that it is practically negligible. The loss of the field's energy to dissipate thermal energy (or heat) is thus...
2.8K
Magnetic Field Of A Current Loop01:16

Magnetic Field Of A Current Loop

6.4K
Consider a circular loop with a radius a, that carries a current I. The magnetic field due to the current at an arbitrary point P along the axis of the loop can be calculated using the Biot-Savart law.
6.4K
Magnetic Field due to Moving Charges01:23

Magnetic Field due to Moving Charges

11.7K
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...
11.7K

You might also read

Related Articles

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

Sort by
Same author

Association Between Peripheral IL-2<sup>+</sup>Th1/CD4<sup>+</sup>Tregs Axis Imbalance and Dysthyroid Optic Neuropathy in Thyroid Eye Disease.

Journal of clinical medicine·2026
Same author

Study on retinal pharmacokinetic characteristics and precision drug administration strategy in patients with fundus diseases.

Pakistan journal of pharmaceutical sciences·2026
Same author

Unveiling the sensing mechanism of a Nile Red-naphthoquinone H₂S fluorescent probe: theoretical calculation and deep learning prediction.

Spectrochimica acta. Part A, Molecular and biomolecular spectroscopy·2026
Same author

Metagenomic expansion of Joyebacterota identifies <i>Cavimicrobium</i>, a dominant sulfide-producing lineage in anoxic marine ecosystems.

ISME communications·2026
Same author

Associations between the Global Leadership Initiative on Malnutrition Criteria and quality of life in patients with gastric cancer: A cross-sectional study.

Asia-Pacific journal of oncology nursing·2026
Same author

Financial Feasibility of BPaL(M) Under Pretomanid Price Scenarios - China, 2023-2024.

China CDC weekly·2026

Related Experiment Video

Updated: Feb 10, 2026

Preparation and Evaluation of Hybrid Composites of Chemical Fuel and Multi-walled Carbon Nanotubes in the Study of Thermopower Waves
09:35

Preparation and Evaluation of Hybrid Composites of Chemical Fuel and Multi-walled Carbon Nanotubes in the Study of Thermopower Waves

Published on: April 10, 2015

9.3K

Large, nonsaturating thermopower in a quantizing magnetic field.

Brian Skinner1, Liang Fu1

  • 1Department of Physics, Massachusetts Institute of Technology, 77 Massachusetts Avenue, Cambridge, MA 02139, USA.

Science Advances
|May 29, 2018
PubMed
Summary

Researchers explored the thermoelectric effect in Dirac/Weyl semimetals using magnetic fields. These materials show promise for high-performance thermoelectric generators and coolers, exceeding traditional semiconductors.

More Related Videos

Electric and Magnetic Field Devices for Stimulation of Biological Tissues
13:29

Electric and Magnetic Field Devices for Stimulation of Biological Tissues

Published on: May 15, 2021

5.7K
Assessing the Influence of Personality on Sensitivity to Magnetic Fields in Zebrafish
07:47

Assessing the Influence of Personality on Sensitivity to Magnetic Fields in Zebrafish

Published on: March 18, 2019

7.1K

Related Experiment Videos

Last Updated: Feb 10, 2026

Preparation and Evaluation of Hybrid Composites of Chemical Fuel and Multi-walled Carbon Nanotubes in the Study of Thermopower Waves
09:35

Preparation and Evaluation of Hybrid Composites of Chemical Fuel and Multi-walled Carbon Nanotubes in the Study of Thermopower Waves

Published on: April 10, 2015

9.3K
Electric and Magnetic Field Devices for Stimulation of Biological Tissues
13:29

Electric and Magnetic Field Devices for Stimulation of Biological Tissues

Published on: May 15, 2021

5.7K
Assessing the Influence of Personality on Sensitivity to Magnetic Fields in Zebrafish
07:47

Assessing the Influence of Personality on Sensitivity to Magnetic Fields in Zebrafish

Published on: March 18, 2019

7.1K

Area of Science:

  • Condensed Matter Physics
  • Materials Science
  • Solid-State Physics

Background:

  • The thermoelectric effect enables conversion of heat into electricity and vice versa.
  • Developing efficient thermoelectric materials is key for sustainable energy technologies.
  • Traditional materials like heavily doped semiconductors have limitations in performance.

Purpose of the Study:

  • To theoretically investigate the thermopower of Dirac/Weyl semimetals under a magnetic field.
  • To compare the thermoelectric properties of these semimetals with conventional semiconductors.
  • To identify pathways for achieving enhanced thermoelectric performance.

Main Methods:

  • Theoretical modeling of thermopower in Dirac/Weyl semimetals.
  • Application of a quantizing magnetic field to the theoretical model.
  • Comparative analysis against established thermoelectric semiconductor models.

Main Results:

  • Dirac/Weyl semimetals exhibit a linear increase in thermopower with magnetic field strength.
  • This thermopower shows no saturation and can attain exceptionally high values.
  • The observed behavior surpasses that of traditional heavily doped semiconductors.

Conclusions:

  • Dirac/Weyl semimetals offer a promising route to record-high thermopower.
  • These findings suggest potential for significant advancements in thermoelectric generators and coolers.
  • Results align with recent experimental observations in materials like PbSnSe.