Search research articles

ABOUT JoVE

Overview Leadership Blog JoVE Help Center

AUTHORS

Publishing Process Editorial Board Scope & Policies Peer Review FAQ Submit

LIBRARIANS

Testimonials Subscriptions Access Resources Library Advisory Board FAQ

RESEARCH

JoVE Journal Methods Collections JoVE Encyclopedia of Experiments Archive

EDUCATION

JoVE Core JoVE Business JoVE Science Education JoVE Lab Manual Faculty Resource Center Faculty Site

Terms & Conditions of Use

Related Concept Videos

Divergence and Curl of Magnetic Field

Divergence and Curl of Magnetic Field

The magnetic field due to a volume current distribution given by the Biot–Savart Law can be expressed as follows:

Local Attraction

Local Attraction

Local attraction refers to disturbances in compass readings caused by magnetic influences from nearby objects such as metal fences, buried pipes, vehicles, buildings, power lines, or natural iron ore deposits. Small items like wristwatches, steel tools, or belt buckles can also interfere with the compass by creating local magnetic fields that distort the Earth's natural magnetic field. These distortions lead to inaccurate readings, posing navigation and land surveying challenges.Local...

Magnetic Field Of A Current Loop

Magnetic Field Of A Current Loop

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.

Torque On A Current Loop In A Magnetic Field

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...

You might also read

Related Articles

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

Sort by

Same author

Engineering flexible superblack materials.

Nature communications·2025

Same author

Direct-write microsphere photolithography of hierarchical infrared metasurfaces.

Applied optics·2021

Same author

A sandwich-type photoelectrochemical aptasensor using Au/BiVO<sub>4</sub> and CdS quantum dots for carcinoembryonic antigen assay.

The Analyst·2021

Same author

Torrefied herb residues in nitrogen, air and oxygen atmosphere: Thermal decomposition behavior and pyrolytic products characters.

Bioresource technology·2021

Same author

<i>Blautia intestinalis</i> sp. nov., isolated from human feces.

International journal of systematic and evolutionary microbiology·2021

Same author

ω3PUFAs improve hepatic steatosis in postnatal overfed rats and HepG2 cells by inhibiting acetyl-CoA carboxylase.

Food science & nutrition·2021

Search research articles

Related Experiment Video

Updated: May 30, 2026

Spectral and Angle-Resolved Magneto-Optical Characterization of Photonic Nanostructures

Spectral and Angle-Resolved Magneto-Optical Characterization of Photonic Nanostructures

Published on: November 21, 2019

Complementary bowtie aperture for localizing and enhancing optical magnetic field.

Nan Zhou¹, Edward C Kinzel, Xianfan Xu

¹School of Mechanical Engineering and Birck Nanotechnology Center, Purdue University, West Lafayette, Indiana 47907, USA.

|August 3, 2011

Summary

Researchers explored nanoscale complementary bowtie antennas to enhance magnetic fields. These antennas, also known as diabolo nanoantennas, show potential for applications near visible wavelengths, with further enhancement possible using groove structures.

More Related Videos

Magnetic Tweezers for the Measurement of Twist and Torque

Magnetic Tweezers for the Measurement of Twist and Torque

Published on: May 19, 2014

Related Experiment Videos

Last Updated: May 30, 2026

Spectral and Angle-Resolved Magneto-Optical Characterization of Photonic Nanostructures

Spectral and Angle-Resolved Magneto-Optical Characterization of Photonic Nanostructures

Published on: November 21, 2019

Magnetic Tweezers for the Measurement of Twist and Torque

Magnetic Tweezers for the Measurement of Twist and Torque

Published on: May 19, 2014

Area of Science:

Plasmonics
Nanophotonics
Electromagnetism

Background:

Nanoscale bowtie antennas and bowtie aperture antennas create strong localized electric fields below the diffraction limit in the optical range.
Babinet's principle suggests complementary structures can efficiently concentrate and enhance magnetic fields.

Purpose of the Study:

To investigate the magnetic field intensity enhancement in nanoscale complementary bowtie apertures and complementary bowtie aperture antennas (diabolo nanoantennas).
To assess the suitability of these structures for applications near visible wavelengths.
To explore methods for further enhancing near-field magnetic intensity.

Main Methods:

Theoretical analysis and simulation of nanoscale complementary bowtie structures.
Investigation of complementary bowtie aperture antennas (diabolo nanoantennas).
Analysis of the effect of groove structures on surface plasmon scattering and magnetic field enhancement.

Main Results:

Complementary bowtie antennas resonate at shorter wavelengths, making them suitable for visible light applications.
The addition of groove structures effectively enhances near-field magnetic intensity by scattering surface plasmons.
Demonstrated significant magnetic field enhancement using complementary nanoantennas.

Conclusions:

Nanoscale complementary bowtie antennas and diabolo nanoantennas are effective for enhancing magnetic fields.
These structures offer tunable resonance for visible wavelength applications.
Groove structures provide a pathway for further boosting magnetic field intensity in plasmonic devices.