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

Capacitor With A Dielectric01:18

Capacitor With A Dielectric

4.8K
Parallel plate capacitors consist of two conducting plates separated by a certain distance. However, it is mechanically difficult to hold the large plates parallel to each other without actual contact. Hence, a dielectric layer is commonly placed between the plates, which provides an easy solution for holding the plates together with a small gap and increases the capacitance of the capacitor.
Dielectrics are non-conducting materials with no free or loosely bound electrons. When a dielectric is...
4.8K
Electrostatic Boundary Conditions in Dielectrics01:27

Electrostatic Boundary Conditions in Dielectrics

1.8K
When an electric field passes from one homogeneous medium to another, crossing the boundary between the two mediums imparts a discontinuity in the electric field. This results in electrostatic boundary conditions that depend on the type of mediums the field propagates through.
Consider a case where both the mediums across a boundary are two different dielectric materials. Recall that the electric field and electric displacement are proportional and related through the material's permittivity....
1.8K
Dielectric Polarization in a Capacitor01:31

Dielectric Polarization in a Capacitor

5.8K
The presence of a dielectric medium in a capacitor not only changes the voltage and capacitance but also affects the electric field. In general, dielectrics can be of two types: polar and nonpolar. In a polar dielectric, the positive and negative charges in the molecules are separated by a distance and hence have a permanent dipole moment. In contrast, no such charge separation exists in a nonpolar dielectric, however the nonpolar molecules get polarized in the presence of an external electric...
5.8K
Potential Due to a Polarized Object01:29

Potential Due to a Polarized Object

682
A neutral atom consists of a positively charged nucleus surrounded by a negatively charged electron cloud. When placed in an external electric field, the external electric force pulls the electrons and nucleus apart, opposite to the intrinsic attraction between the nucleus and the electrons. The opposing forces balance each other with a slight shift between the center of masses of the nucleus and the electron cloud, resulting in a polarized atom. On the other hand, a few molecules, like water,...
682

You might also read

Related Articles

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

Sort by
Same author

Quantitative source apportionment deciphering hydrogeological and anthropogenic contributions to selenium enrichment in groundwater against deficiency context.

Environmental research·2026
Same author

Engineering the Cu(0)-Co<sub>2</sub>C Interface via Reaction-Induced Reconstruction for CO<sub>2</sub> Hydrogenation to C<sub>2+</sub> Hydrocarbons.

Journal of the American Chemical Society·2025
Same author

Flexible Living Artificial Dura Mater for Efficient Therapy of Central Nervous System Injury Based on Neuronal Differentiation and Neuroprotective A2 Astrocyte Activation.

Advanced materials (Deerfield Beach, Fla.)·2025
Same author

Pulmonary diseases accurate recognition using adaptive multiscale feature fusion in chest radiography.

Scientific reports·2025
Same author

Deformation properties of rock strata based on angular displacement and its hydrogeological significance.

Scientific reports·2025
Same author

Brusatol improves the efficacy of sorafenib in Huh7 cells via ferroptosis resistance dependent Nrf2 signaling pathway.

Biochemical and biophysical research communications·2024

Related Experiment Video

Updated: Jan 1, 2026

Demonstration of Equal-Intensity Beam Generation by Dielectric Metasurfaces
09:33

Demonstration of Equal-Intensity Beam Generation by Dielectric Metasurfaces

Published on: June 7, 2019

6.6K

Dual-functional dielectric metasurface doublets.

Kai Bian, Daquan Lu, Wei Hu

    Optics Express
    |December 28, 2019
    PubMed
    Summary

    We developed dual-functional dielectric metasurface doublets using Pancharatnam-Berry phase. Functionalities for two wavelengths are independently controlled by nanofin orientation, enabling wavelength-switchable devices.

    Area of Science:

    • Optics and Photonics
    • Materials Science

    Background:

    • Metasurfaces offer miniaturization and integration for optical devices.
    • Achieving multi-functional metasurfaces with independent control is challenging.

    Purpose of the Study:

    • To propose a novel approach for designing dual-functional dielectric metasurface doublets.
    • To demonstrate independent control over optical functionalities at different wavelengths.

    Main Methods:

    • Utilizing the Pancharatnam-Berry phase principle.
    • Designing dual-layer metasurfaces with precisely oriented nanofins.
    • Simulating device performance at two distinct operating wavelengths.

    Main Results:

    • Independently designed functionalities for two operating wavelengths were achieved.

    More Related Videos

    Demonstration of Spin-Multiplexed and Direction-Multiplexed All-Dielectric Visible Metaholograms
    08:48

    Demonstration of Spin-Multiplexed and Direction-Multiplexed All-Dielectric Visible Metaholograms

    Published on: September 25, 2020

    6.2K
    Simulation, Fabrication and Characterization of THz Metamaterial Absorbers
    13:44

    Simulation, Fabrication and Characterization of THz Metamaterial Absorbers

    Published on: December 27, 2012

    15.8K

    Related Experiment Videos

    Last Updated: Jan 1, 2026

    Demonstration of Equal-Intensity Beam Generation by Dielectric Metasurfaces
    09:33

    Demonstration of Equal-Intensity Beam Generation by Dielectric Metasurfaces

    Published on: June 7, 2019

    6.6K
    Demonstration of Spin-Multiplexed and Direction-Multiplexed All-Dielectric Visible Metaholograms
    08:48

    Demonstration of Spin-Multiplexed and Direction-Multiplexed All-Dielectric Visible Metaholograms

    Published on: September 25, 2020

    6.2K
    Simulation, Fabrication and Characterization of THz Metamaterial Absorbers
    13:44

    Simulation, Fabrication and Characterization of THz Metamaterial Absorbers

    Published on: December 27, 2012

    15.8K
  • Functionality switching by changing incident wavelength was demonstrated.
  • Simulated examples confirmed the effective performance of the dual-functional metasurface doublet.

    • Conclusions:

    • The proposed Pancharatnam-Berry phase-based approach enables effective dual-functional dielectric metasurface design.
    • This method offers a pathway for creating compact, integrated, and switchable optical devices.