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

5.0K
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...
5.0K
Passive Filters01:27

Passive Filters

1.0K
Passive filters are utilized to shape the frequency spectrum of signals across a diverse array of applications. These filters, using only passive elements like resistors (R), inductors (L), and capacitors (C), are capable of selectively allowing or blocking certain frequency ranges without the need for external power sources.
Low-Pass Filters
Low-pass filters are designed to transmit signals with frequencies lower than the cutoff frequency, ωc, and attenuate those above it. The cutoff...
1.0K
Active Filters01:25

Active Filters

1.3K
Active filters are electronic circuits that use operational amplifiers (op-amps), resistors, and capacitors to filter out unwanted frequency components from a signal. A first-order low-pass active filter is designed to pass signals with a frequency lower than a certain cutoff frequency and attenuate frequencies higher than that cutoff frequency. The transfer function for a first-order low-pass active filter is:
1.3K
Gauss's Law in Dielectrics01:17

Gauss's Law in Dielectrics

5.2K
Consider a polar dielectric placed in an external field. In such a dielectric, opposite charges on adjacent dipoles neutralize each other, such that the net charge within the dielectric is zero. When a polar dielectric is inserted in between the capacitor plates, an electric field is generated due to the presence of net charges near the edge of the dielectric and the metal plates interface. Since the external electrical field merely aligns the dipoles, the dielectric as a whole is neutral. An...
5.2K
Dielectric Polarization in a Capacitor01:31

Dielectric Polarization in a Capacitor

6.0K
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...
6.0K
Susceptibility, Permittivity and Dielectric Constant01:26

Susceptibility, Permittivity and Dielectric Constant

2.9K
When placed in an external electric field, a dielectric material gets polarized. The charge density in the dielectric material is given by the sum of the bound and free charge densities, while the total charge density can also be written in terms of the total electric field. The bound charge density can be measured in terms of polarization, leading to the relationship between electric displacement and polarization.
2.9K

You might also read

Related Articles

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

Sort by
Same author

Phase Modulation for Quadruplex Channels of Arbitrary Orthogonal Polarization States via Bilayer Metasurfaces.

Nanophotonics (Berlin, Germany)·2026
Same author

Three-dimensional omnidirectional acoustic orbital angular momentum emitter with tunable focus.

The Journal of the Acoustical Society of America·2025
Same author

Shape unrestricted topological corner state based on Kekulé modulation and enhanced nonlinear harmonic generation.

Nanophotonics (Berlin, Germany)·2024
Same author

[Application of chromatographic retention time correction in untargeted screening].

Wei sheng yan jiu = Journal of hygiene research·2024
Same author

Identification of a novel <i>FERMT1</i> variant causing kindler syndrome and a review of the clinical and molecular genetic features in Chinese patients.

Frontiers in pediatrics·2024
Same author

A proposed biomarker for human citric acid ester (CAE) exposure, and the potential disturbance on human lipid metabolism.

Environmental research·2024

Related Experiment Video

Updated: Feb 2, 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

6.7K

Dielectric Metasurface-Based High-Efficiency Mid-Infrared Optical Filter.

Fei Shen1, Qianlong Kang2, Jingjing Wang3

  • 1School of Computer and Information, Hefei University of Technology, Hefei 230009, China. shenfei@hfut.edu.cn.

Nanomaterials (Basel, Switzerland)
|November 17, 2018
PubMed
Summary

This study presents a highly efficient mid-infrared optical filter using silicon nanodisks. The reflective filter achieves nearly 100% efficiency across a wide wavelength range, ideal for integrated optical devices.

Keywords:
dielectric metasurfacesmid-infrared (mid-IR)optical filter

More Related Videos

In-situ Tapering of Chalcogenide Fiber for Mid-infrared Supercontinuum Generation
09:39

In-situ Tapering of Chalcogenide Fiber for Mid-infrared Supercontinuum Generation

Published on: May 27, 2013

12.8K
Optical Trap Loading of Dielectric Microparticles In Air
08:57

Optical Trap Loading of Dielectric Microparticles In Air

Published on: February 5, 2017

9.5K

Related Experiment Videos

Last Updated: Feb 2, 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

6.7K
In-situ Tapering of Chalcogenide Fiber for Mid-infrared Supercontinuum Generation
09:39

In-situ Tapering of Chalcogenide Fiber for Mid-infrared Supercontinuum Generation

Published on: May 27, 2013

12.8K
Optical Trap Loading of Dielectric Microparticles In Air
08:57

Optical Trap Loading of Dielectric Microparticles In Air

Published on: February 5, 2017

9.5K

Area of Science:

  • Photonics and Nanotechnology
  • Optics and Electromagnetic Theory

Background:

  • Dielectric nanoresonators enable efficient optical devices through Mie resonances.
  • All-dielectric metasurfaces offer low optical loss for integrated photonic applications.

Purpose of the Study:

  • To propose and design a high-efficiency optical filter in the mid-infrared (mid-IR) range.
  • To utilize silicon (Si) nanodisk arrays for a reflective optical filter.

Main Methods:

  • Numerical simulation and design of an all-dielectric metasurface composed of Si nanodisk arrays.
  • Electromagnetic eigen-mode decomposition to analyze resonance mechanisms.

Main Results:

  • The proposed reflective optical filter covers wavelengths from 3.8 μm to 4.7 μm with nearly 100% reflection efficiency.
  • The filter operates based on the excitation of electric dipole resonance in Si nanodisks.
  • Demonstrated polarization-independence and incident-angle independence (0° to 20°).

Conclusions:

  • The Si nanodisk array metasurface provides a high-performance optical filter for mid-IR applications.
  • The filter's properties make it suitable for sensing, imaging, and energy harvesting.
  • The design offers a promising platform for advanced integrated optical devices.