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

Shaping the Amplitude and Phase of Laser Beams by Using a Phase-only Spatial Light Modulator08:39

Shaping the Amplitude and Phase of Laser Beams by Using a Phase-only Spatial Light Modulator

10.3K
We show how to encode the complex field of laser beams by using a single phase element. A common-path interferometer is employed to mix the phase information displayed into a phase-only spatial light modulator to finally retrieve the desired complex field pattern at the output of an optical imaging...
10.3K
The Power Superposition Principle01:19

The Power Superposition Principle

400
Consider a circuit with two sinusoidal voltage sources. Each one influences the circuit independently, and the superposition principle helps us understand the combined effect by adding up the responses from each source.
400
Power in a Three-Phase Circuit01:15

Power in a Three-Phase Circuit

603
Three-phase systems have two configurations: the wye and delta. A star configuration can be three or four wires; in a delta configuration, the components are connected in a closed loop. Instantaneous power refers to the power value at a precise moment, and in a balanced three-phase system, it is constant. This is because the sum of the instantaneous powers in the three phases remains steady over time, despite individual fluctuations, due to the symmetry and phase relationship. The total...
603
Power Distribution in Three-phase and Single Phase Circuits01:17

Power Distribution in Three-phase and Single Phase Circuits

604
Power distribution within electrical circuits is a foundational aspect of residential and industrial energy systems. While single-phase power is common in residential settings, three-phase power is the standard for industrial environments with heavy machinery. Each system is different and has advantages, and it's crucial to understand the underlying principles of power distribution and material efficiency.
Single-Phase Power Distribution:
Single-phase circuits are typical in household settings;...
604
Power System Three-Phase Short Circuits01:21

Power System Three-Phase Short Circuits

527
Determining the subtransient fault current in a power system involves representing transformers by their leakage reactances, transmission lines by their equivalent series reactances, and synchronous machines as constant voltage sources behind their subtransient reactances. In this analysis, certain elements are excluded, such as winding resistances, series resistances, shunt admittances, delta-Y phase shifts, armature resistance, saturation, saliency, non-rotating impedance loads, and small...
527
Demonstration of Equal-Intensity Beam Generation by Dielectric Metasurfaces09:33

Demonstration of Equal-Intensity Beam Generation by Dielectric Metasurfaces

6.6K
A protocol for the fabrication and optical characterization of dielectric metasurfaces is presented. This method can be applied to the fabrication of not only beam splitters, but also of general dielectric metasurfaces, such as lenses, holograms, and optical...
6.6K

You might also read

Related Articles

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

Sort by
Same author

Creation of a computational space with model-free metasurface neural network.

Nature communications·2026
Same author

The Association Between Polycystic Ovary Syndrome and Vitamin D Deficiency in Infertile Women: A Case-Control Study.

Health science reports·2025
Same author

Design of an omnidirectional conical beam leaky wave antenna using the holographic technique.

Scientific reports·2025
Same author

Automated FAZ segmentation and diabetic retinopathy classification using OCTA images.

BMC ophthalmology·2025
Same author

Clinical application of anterior segment optical coherence tomography in ocular emergencies: A comprehensive review.

The Journal of international medical research·2025
Same author

Training of physical neural networks.

Nature·2025

Related Experiment Video

Updated: Jan 19, 2026

Shaping the Amplitude and Phase of Laser Beams by Using a Phase-only Spatial Light Modulator
08:39

Shaping the Amplitude and Phase of Laser Beams by Using a Phase-only Spatial Light Modulator

Published on: January 28, 2019

10.3K

Asymmetric Spatial Power Dividers Using Phase-Amplitude Metasurfaces Driven by Huygens Principle.

Hamid Rajabalipanah1, Ali Abdolali1, Javad Shabanpour1

  • 1Electrical Engineering, Iran University of Science and Technology, Narmak, Tehran 16846-13114, Iran.

ACS Omega
|September 12, 2019
PubMed
Summary

This study shows that combining metasurfaces doesn't always work as expected. Researchers developed an asymmetric spatial power divider (ASPD) using phase and amplitude control for precise beamforming.

More Related Videos

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
The Power Superposition Principle
01:19

The Power Superposition Principle

400

Related Experiment Videos

Last Updated: Jan 19, 2026

Shaping the Amplitude and Phase of Laser Beams by Using a Phase-only Spatial Light Modulator
08:39

Shaping the Amplitude and Phase of Laser Beams by Using a Phase-only Spatial Light Modulator

Published on: January 28, 2019

10.3K
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
The Power Superposition Principle
01:19

The Power Superposition Principle

400

Area of Science:

  • Electromagnetics
  • Metasurface technology
  • Antenna theory

Background:

  • Metasurfaces enable advanced wave manipulation.
  • Superposition of phase-encoded metasurfaces for combined functions has limitations.

Purpose of the Study:

  • To investigate the validity of the superposition theorem for phase-only metasurfaces.
  • To introduce a novel asymmetric spatial power divider (ASPD) for precise beam control.

Main Methods:

  • Semi-analytical procedure to analyze metasurface superposition.
  • Design of ASPD by modulating meta-atom phase and amplitude.
  • Utilizing C-shaped Pancharatnam-Berry meta-atoms.
  • Numerical simulations and experimental fabrication.

Main Results:

  • Superposition theorem is not universally valid for phase-only metasurfaces.
  • ASPDs can generate multiple beams with controlled orientations and power.
  • Optimal phase and amplitude control is achieved using C-shaped meta-atoms.
  • Experimental results validate the theoretical and numerical predictions.

Conclusions:

  • The developed ASPD offers arbitrary power division and beamforming capabilities.
  • This approach provides a simple and economical alternative for beamforming array antennas.
  • Findings enable subwavelength-scale arbitrary spatial power dividers.