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

Gravitational Potential Energy for Extended Objects01:07

Gravitational Potential Energy for Extended Objects

2.0K
Consider a system comprising several point masses. The coordinates of the center of mass for this system can be expressed as the summation of the product of each mass and its position vector divided by the total mass:
2.0K
Generating Electromagnetic Radiations01:10

Generating Electromagnetic Radiations

7.6K
The German physicist Heinrich Hertz (1857–1894) was the first to generate and detect certain types of electromagnetic waves in the laboratory. Starting in 1887, he performed a series of experiments that confirmed the existence of electromagnetic waves and verified that they travel at the speed of light. Hertz used an alternating-current RLC (resistor-inductor-capacitor) circuit that resonated at a known frequency and connected it to a loop of wire. High voltages induced across the gap in...
7.6K
Calculations of Electric Potential I01:15

Calculations of Electric Potential I

2.7K
Consider a ring of radius R with a uniform charge density λ. What will the electric potential be at point M, which is located on the axis of the ring at a distance x from the center of the ring?
The ring is divided into infinitesimal small arcs such that point M is equidistant from all the arcs. Here, the cylindrical coordinate system is used to calculate the electric potential at point M. A general element of the arc between angles θ and θ + dθ is of the length Rdθ and has a charge of...
2.7K
Standing Electromagnetic Waves01:15

Standing Electromagnetic Waves

2.4K
Electromagnetic waves can be reflected; the surface of a conductor or a dielectric can act as a reflector. As electric and magnetic fields obey the superposition principle, so do electromagnetic waves. The superposition of an incident wave and a reflected electromagnetic wave produces a standing wave analogous to the standing waves created on a stretched string.
Suppose a sheet of a perfect conductor is placed in the yz-plane, and a linearly polarized electromagnetic wave traveling in the...
2.4K
Potential Due to a Magnetized Object01:24

Potential Due to a Magnetized Object

841
Magnetic dipoles in magnetic materials are aligned when placed under an external magnetic field. For paramagnets and ferromagnets, dipole alignment occurs in the direction of the magnetic field. However, the dipoles align opposite to the field in the case of diamagnets. This state of magnetic polarization due to the external field is called magnetization. Magnetization is defined as the dipole moment per unit volume. It plays a similar role to polarization in electrostatics.
The vector...
841
Prismatic Beams: Problem Solving01:15

Prismatic Beams: Problem Solving

497
In the design of a supported timber beam subjected to a distributed load, both the beam's physical dimensions and the timber's characteristics, such as its grade and species, are critical. These factors determine the allowable stress values, which are crucial for calculating the necessary beam depth to ensure structural integrity and safety.
The design begins with analyzing the beam as a free body to identify moments and force balances, thereby determining support reactions. Next, the...
497

You might also read

Related Articles

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

Sort by
Same author

Karst tiankengs preserve but constrain evolutionary potential in the endangered tree Magnolia aromatica.

Current biology : CB·2026
Same author

Optical singularity protractor for rotating metrology with neuromorphic sensing.

Light, science & applications·2026
Same author

Chromosome-level genome and population resequencing reveal genetic diversity, demographic history, and climate risk in the East Asian relict tree <i>Perkinsiodendron macgregorii</i>.

Plant diversity·2026
Same author

Non-diffracting reconfigurable orbital angular momentum holography.

Optics express·2026
Same author

Observation of high-order quantum Pancharatnam-Berry phase with structured photons.

Fundamental research·2026
Same author

The cross-city mobility patterns and incubation period of the early-stage chikungunya fever outbreak in Guangdong Province, China, in 2025.

PLoS neglected tropical diseases·2026

Related Experiment Video

Updated: Feb 25, 2026

Fabricating Metamaterials Using the Fiber Drawing Method
11:57

Fabricating Metamaterials Using the Fiber Drawing Method

Published on: October 18, 2012

14.4K

Spawning a ring of exceptional points from a metamaterial.

Ming Kang, Weiren Zhu, Hui-Tian Wang

    Optics Express
    |August 10, 2017
    PubMed
    Summary

    Researchers generated a ring of exceptional points (EPs) in metamaterials by tuning losses. This discovery offers new ways to control optical properties through engineered dissipation and radiation.

    Area of Science:

    • * Physics, Metamaterials, Optics

    Background:

    • * Exceptional points (EPs) are degeneracies in non-Hermitian systems, leading to unique physical phenomena.
    • * Metamaterials offer a platform to engineer exotic physics, including EPs.

    Purpose of the Study:

    • * To theoretically investigate the generation of an exceptional points ring (EPs-ring) in a non-Hermitian resonant metamaterial.
    • * To explore the influence of dissipation and radiation losses on EP formation.

    Main Methods:

    • * Utilized coupled mode theory fitted to scattering matrix data.
    • * Employed finite-difference time-domain (FDTD) simulations for validation.

    Main Results:

    • * Demonstrated a transition from a single EP to a ring of EPs by varying substrate thickness.

    More Related Videos

    Fabrication of Nanopillar-Based Split Ring Resonators for Displacement Current Mediated Resonances in Terahertz Metamaterials
    10:28

    Fabrication of Nanopillar-Based Split Ring Resonators for Displacement Current Mediated Resonances in Terahertz Metamaterials

    Published on: March 23, 2017

    8.1K
    Characterizing Dissipative Elastic Metamaterials Produced by Additive Manufacturing
    09:39

    Characterizing Dissipative Elastic Metamaterials Produced by Additive Manufacturing

    Published on: June 28, 2024

    1.7K

    Related Experiment Videos

    Last Updated: Feb 25, 2026

    Fabricating Metamaterials Using the Fiber Drawing Method
    11:57

    Fabricating Metamaterials Using the Fiber Drawing Method

    Published on: October 18, 2012

    14.4K
    Fabrication of Nanopillar-Based Split Ring Resonators for Displacement Current Mediated Resonances in Terahertz Metamaterials
    10:28

    Fabrication of Nanopillar-Based Split Ring Resonators for Displacement Current Mediated Resonances in Terahertz Metamaterials

    Published on: March 23, 2017

    8.1K
    Characterizing Dissipative Elastic Metamaterials Produced by Additive Manufacturing
    09:39

    Characterizing Dissipative Elastic Metamaterials Produced by Additive Manufacturing

    Published on: June 28, 2024

    1.7K
  • * Observed that each EP in the ring corresponds to maximally asymmetric reflection.
  • * Confirmed excellent agreement between coupled mode theory and FDTD simulations.

    • Conclusions:

    • * Tuning dissipation and radiation losses in metamaterials can controllably generate EPs-rings.
    • * This provides a method to significantly alter the optical properties of metamaterials.