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

Electromagnetic Waves01:30

Electromagnetic Waves

11.8K
James Clerk Maxwell formulated a single theory combining all the electric and magnetic effects scientists knew during that time, calling the phenomena his theory predicted “Electromagnetic waves”. He brought together all the work that had been done by brilliant physicists such as Oersted, Coulomb, Gauss, and Faraday and added his own insights to develop the overarching theory of electromagnetism. Maxwell’s equations, combined with the Lorentz force law, encompass all the laws...
11.8K
Electromagnetic Waves in Matter01:30

Electromagnetic Waves in Matter

4.1K
Electromagnetic waves can travel in the vacuum as well as in matter. For example light, which is an electromagnetic wave, can travel through air, water, or glass.
Consider the electromagnetic wave passing through a dielectric medium. In such a case, Maxwell's equations get modified. In Ampere's law, ε0 , the dielectric permittivity of free space is replaced with ε, the permittivity of dielectric. Also, the vacuum permeability μ0 is replaced by the permeability of the medium, μ.
Furthermore,...
4.1K
Electromagnetic Fields01:30

Electromagnetic Fields

2.9K
Electric fields generated by static charges, often referred to as electrostatic fields, are characteristically different from electric fields created by time-varying magnetic fields. While the former is a conservative field, implying that no net work is done on a test charge if it goes around in a complete loop in the field, the latter is, by definition, not a conservative field; net work is done, and it is proportional to the rate of change of magnetic flux.
However, the observation of...
2.9K
Generating Electromagnetic Radiations01:10

Generating Electromagnetic Radiations

7.9K
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...
7.9K
Propagation Speed of Electromagnetic Waves01:30

Propagation Speed of Electromagnetic Waves

4.8K
Electromagnetic waves are consistent with Ampere's law. Assuming there is no conduction current Ampere's law is given as:
4.8K
Plane Electromagnetic Waves II01:29

Plane Electromagnetic Waves II

4.2K
Consider a plane wavefront traveling in position x-direction with a constant speed. This wavefront can be utilized to obtain the relationship between electric and magnetic fields with the help of Faraday's law.
4.2K

You might also read

Related Articles

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

Sort by
Same author

A metasurface-enabled green-smart window for intelligent wireless communications with high visible transparency and low infrared emissivity.

Nature communications·2026
Same author

Terahertz graphene-based tunable capacitance metamaterials with ultra-high amplitude modulation depth.

Light, science & applications·2025
Same author

A space-time holographic metasurface antenna.

Science advances·2025
Same author

Impact of sarcopenia on mortality risk and sustained peak expiratory flow changes in an asthmatic population: A 7-year longitudinal cohort study.

Geriatrics & gerontology international·2025
Same author

Simplified radar architecture based on information metasurface.

Nature communications·2025
Same author

Adaptively programmable metasurface for intelligent wireless communications in complex environments.

Nature communications·2025
Same journal

Multi-dimensional spatial-temporal projection ultrafast compressed imaging.

Light, science & applications·2026
Same journal

Expanded field of view light-field extended-reality displays with metalens array.

Light, science & applications·2026
Same journal

Experimental observation of counter-intuitive features of photonic bunching.

Light, science & applications·2026
Same journal

High-speed and high-sensitivity multi-gas detection based on parallel heterodyne LITES sensor.

Light, science & applications·2026
Same journal

Two-terminal β-Ga<sub>2</sub>O<sub>3</sub> photo-synapse for diversified in-sensor computing via self-trapped holes engineering.

Light, science & applications·2026
Same journal

Drastically magnetically tuned coupling strength and nonlinearity in CrSBr exciton-polaritons.

Light, science & applications·2026
See all related articles

Related Experiment Video

Updated: Mar 10, 2026

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

6.3K

High-dimensional multiplexing through vortex electromagnetic wave manipulation by space-time-coding metasurfaces.

Chenfeng Yang1,2, Si Ran Wang1,2, Jia Chen Du1,2

  • 1State Key Laboratory of Terahertz and Millimeter Waves, City University of Hong Kong, Hong Kong, 999077, China.

Light, Science & Applications
|March 9, 2026
PubMed
Summary
This summary is machine-generated.

We introduce a dual-polarized asynchronous space-time-coding metasurface (DASM) to generate multiple orbital angular momentum (OAM) beams. This innovation enhances wireless communication capacity and scalability by simplifying system integration.

More Related Videos

Transmission of Multiple Signals through an Optical Fiber Using Wavefront Shaping
09:43

Transmission of Multiple Signals through an Optical Fiber Using Wavefront Shaping

Published on: March 20, 2017

10.4K
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

Related Experiment Videos

Last Updated: Mar 10, 2026

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

6.3K
Transmission of Multiple Signals through an Optical Fiber Using Wavefront Shaping
09:43

Transmission of Multiple Signals through an Optical Fiber Using Wavefront Shaping

Published on: March 20, 2017

10.4K
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

Area of Science:

  • Optics and Photonics
  • Telecommunications Engineering
  • Metamaterials Science

Background:

  • Orbital angular momentum (OAM) is crucial for high-dimensional information multiplexing in fields like quantum mechanics and telecommunications.
  • Conventional OAM systems face integration and scalability issues due to complex optics and RF chains.

Purpose of the Study:

  • To propose a novel dual-polarized asynchronous space-time-coding metasurface (DASM) for generating coaxial OAM beams.
  • To develop a high-dimensional communication framework by combining OAM, polarization, and frequency division multiplexing.
  • To simplify OAM-based communication systems by eliminating external modulators.

Main Methods:

  • Design and implementation of a dual-polarized asynchronous space-time-coding metasurface (DASM).
  • Synergistic integration of OAM, polarization, and frequency division multiplexing.
  • Direct modulation of information onto OAM beams via the metasurface.

Main Results:

  • Successful generation of coaxial OAM beams in multiple physical domains using a single aperture.
  • Dramatically increased number of communication channels through high-dimensional multiplexing.
  • Elimination of complex external modulators, simplifying the system architecture.

Conclusions:

  • DASM offers a simplified, versatile, and efficient solution for OAM-based wireless communication.
  • The proposed framework significantly enhances capacity and scalability in wireless communications.
  • This technology paves the way for advanced, integrated OAM communication systems.