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

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...
Induction01:16

Induction

An emf is induced when the magnetic field in a coil is changed by pushing a bar magnet into or out of the coil. emfs of opposite signs are produced by motion in opposite directions, and the directions of emfs are also reversed by reversing poles. The same results are produced if the coil is moved rather than the magnet—it is the relative motion that is important. The faster the motion, the greater the emf. Additionally, there is no emf when the magnet is stationary relative to the coil.
A...
Motional Emf01:22

Motional Emf

Magnetic flux depends on three factors: the strength of the magnetic field, the area through which the field lines pass, and the field's orientation with respect to the surface area. If any of these quantities vary, a corresponding variation in magnetic flux occurs. If the area through which the magnetic field lines are passing changes, then the magnetic flux also changes. This change in the area can be of two types: the flux through the rectangular loop increases as it moves into the magnetic...
Faraday Disk Dynamo01:23

Faraday Disk Dynamo

A Faraday disk dynamo is a DC generator, producing an emf that is constant in time. It consists of a conducting disk that rotates with a constant angular velocity in the magnetic field, perpendicular to the disk's plane. The rotation of the disk causes a change in magnetic flux, which induces an emf, causing opposite charges to develop on the rim and in the center of the disk. The polarity of the induced emf can be determined by the direction of the magnetic field and the direction of 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 Force Between Two Parallel Currents01:13

Magnetic Force Between Two Parallel Currents

Two long, straight, and parallel current-carrying conductors exert a force of equal magnitude on one another. The direction of the force depends on the current direction in the conductors.
The force exerted by the magnetic field due to the first conductor over a finite length of the second conductor is given as the product of the current in the second conductor and  the vector product of the length vector along the current element and the field due to the first conductor. According to the...

You might also read

Related Articles

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

Sort by
Same author

Experimental demonstration of coupled nano-Fabry-Perot groove resonators.

Optics letters·2025
Same author

Electroluminescence and energy transfer mediated by hyperbolic polaritons.

Nature·2025
Same author

Electrically driven nanogap antennas and quantum tunneling regime.

Nanophotonics (Berlin, Germany)·2024
Same author

Intertwined Fano resonances in sub-wavelength metallic gratings: omnidirectional and wideband optical transmission.

Optics letters·2024
Same author

Experimental Investigation of the Thermal Emission Cross Section of Nanoresonators Using Hierarchical Poisson-Disk Distributions.

Physical review letters·2024
Same author

Over-coupled resonator for broadband surface enhanced infrared absorption (SEIRA).

Nature communications·2023

Related Experiment Video

Updated: May 29, 2026

Spectral and Angle-Resolved Magneto-Optical Characterization of Photonic Nanostructures
08:01

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

Published on: November 21, 2019

Light funneling mechanism explained by magnetoelectric interference.

Fabrice Pardo1, Patrick Bouchon, Riad Haïdar

  • 1CNRS - Laboratoire de Photonique et de Nanostructures, Route de Nozay, 91460 Marcoussis, France. fabrice.pardo@lpn.cnrs.fr

Physical Review Letters
|September 21, 2011
PubMed
Summary

Optical energy funnels into subwavelength grooves via magnetoelectric interference, not plasmonic waves. This occurs through interaction with the resonant escaping wave

More Related Videos

Measuring Magnetically-Tuned Ferroelectric Polarization in Liquid Crystals
07:03

Measuring Magnetically-Tuned Ferroelectric Polarization in Liquid Crystals

Published on: August 15, 2018

Related Experiment Videos

Last Updated: May 29, 2026

Spectral and Angle-Resolved Magneto-Optical Characterization of Photonic Nanostructures
08:01

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

Published on: November 21, 2019

Measuring Magnetically-Tuned Ferroelectric Polarization in Liquid Crystals
07:03

Measuring Magnetically-Tuned Ferroelectric Polarization in Liquid Crystals

Published on: August 15, 2018

Area of Science:

  • Optics and Photonics
  • Electromagnetism
  • Surface Science

Background:

  • Subwavelength structures are crucial for manipulating light.
  • Understanding energy funneling into nanoscale features is key for optical device design.

Purpose of the Study:

  • To elucidate the precise physical mechanisms behind optical energy funneling into subwavelength grooves on metallic surfaces.
  • To differentiate between plasmonic wave contribution and other electromagnetic phenomena.

Main Methods:

  • Decomposition of the electromagnetic field into propagative and evanescent components.
  • Analysis of the interaction between incident and evanescent fields.

Main Results:

  • The primary mechanism is magnetoelectric interference between the incident wave and the evanescent field.
  • Funneling is not driven by plasmonic waves propagating towards the grooves.
  • The evanescent field is significantly influenced by the resonant wave escaping from the groove.

Conclusions:

  • The optical energy funneling is dominated by a magnetoelectric interference effect.
  • This finding challenges the conventional understanding attributing such phenomena solely to plasmonic wave propagation.