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

Symmetry in Maxwell's Equations01:28

Symmetry in Maxwell's Equations

3.5K
Once the fields have been calculated using Maxwell's four equations, the Lorentz force equation gives the force that the fields exert on a charged particle moving with a certain velocity. The Lorentz force equation combines the force of the electric field and of the magnetic field on the moving charge. Maxwell's equations and the Lorentz force law together encompass all the laws of electricity and magnetism. The symmetry that Maxwell introduced into his mathematical framework may not be...
3.5K
Unsymmetric Bending - Angle of Neutral Axis01:15

Unsymmetric Bending - Angle of Neutral Axis

371
Unsymmetrical bending occurs when a structural member is subjected to bending moments in a plane that does not align with the member's principal axes. This scenario typically arises in beams and other structural components when loads are applied at non-ideal angles, introducing complexities in stress analysis.
When a bending moment is applied at an angle θ concerning the vertical axis of a symmetrical member, it can be resolved into components along the member's principal...
371
Angular Momentum about an Arbitrary Axis01:11

Angular Momentum about an Arbitrary Axis

234
Imagine a rigid body with a mass denoted as 'm', which has its center of mass at point G and is rotating around an inertial reference frame. The angular momentum at an arbitrary point P can be calculated by taking the cross product of the position vector and linear momentum vector for each individual mass element.
The velocity of a mass element comprises its translational velocity and the relative velocity instigated by the body's rotation. Substituting the velocity equation into...
234
Angular Momentum: Single Particle01:10

Angular Momentum: Single Particle

6.5K
Angular momentum is directed perpendicular to the plane of the rotation, and its magnitude depends on the choice of the origin. The perpendicular vector joining the linear momentum vector of an object to the origin is called the “lever arm.” If the lever arm and linear momentum are collinear, then the magnitude of the angular momentum is zero. Therefore, in this case, the object rotates about the origin such that it lies on the rim of the circumference defined by the lever arm...
6.5K
Conservation of Angular Momentum: Application01:18

Conservation of Angular Momentum: Application

11.3K
A system's total angular momentum remains constant if the net external torque acting on the system is zero. Examples of such systems include a freely spinning bicycle tire that slows over time due to torque arising from friction, or the slowing of Earth's rotation over millions of years due to frictional forces exerted on tidal deformations. However in the absence of a net external torque, the angular momentum remains conserved. The conservation of angular momentum principle requires a...
11.3K
Gauss's Law: Planar Symmetry01:27

Gauss's Law: Planar Symmetry

8.0K
A planar symmetry of charge density is obtained when charges are uniformly spread over a large flat surface. In planar symmetry, all points in a plane parallel to the plane of charge are identical with respect to the charges. Suppose the plane of the charge distribution is the xy-plane, and the electric field at a space point P with coordinates (x, y, z) is to be determined. Since the charge density is the same at all (x, y) - coordinates in the z = 0 plane, by symmetry, the electric field at P...
8.0K

You might also read

Related Articles

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

Sort by
Same author

Redefining topological robustness in optical polarization fields through a generalized skyrmion number.

Nature communications·2026
Same author

Structureless excitation and manipulation of dynamic holographic plasmonic slides.

Nature communications·2026
Same author

Scalable and programmable topological transitions in plasmonic Moiré superlattices.

Nature communications·2026
Same author

Observation of strong spin-orbit couplings in plasmonic spin-twistronics topological lattices.

Nature communications·2026
Same author

Synthetic gain for electron-beam spectroscopy.

Nature communications·2026
Same author

Metaoptics merging computational optics and optical computing toward intelligent visual perception.

Science advances·2026

Related Experiment Video

Updated: Aug 5, 2025

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

5.8K

Angular momentum holography via a minimalist metasurface for optical nested encryption.

Hui Yang1,2, Peng He1, Kai Ou3

  • 1National Research Center for High-Efficiency Grinding, College of Mechanical and Vehicle Engineering, Hunan University, Changsha, 410082, China.

Light, Science & Applications
|March 28, 2023
PubMed
Summary

This study introduces angular momentum (AM) holography using metasurfaces to combine orbital and spin AM for high-capacity information technologies. This novel approach enables advanced optical communication and security applications.

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

6.3K
Compact Lens-less Digital Holographic Microscope for MEMS Inspection and Characterization
10:28

Compact Lens-less Digital Holographic Microscope for MEMS Inspection and Characterization

Published on: July 5, 2016

10.3K

Related Experiment Videos

Last Updated: Aug 5, 2025

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

5.8K
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

6.3K
Compact Lens-less Digital Holographic Microscope for MEMS Inspection and Characterization
10:28

Compact Lens-less Digital Holographic Microscope for MEMS Inspection and Characterization

Published on: July 5, 2016

10.3K

Area of Science:

  • Optics and Photonics
  • Information Technology
  • Materials Science

Background:

  • Metasurfaces enable multi-functional integration for high-capacity information technologies by manipulating light's physical dimensions.
  • Orbital angular momentum (OAM) and spin angular momentum (SAM) are explored as independent carriers for information multiplexing.
  • Simultaneous control of OAM and SAM for information multiplexing remains a challenge.

Purpose of the Study:

  • To propose and demonstrate angular momentum (AM) holography for synergistic information multiplexing using OAM and SAM.
  • To develop a single-layer, non-interleaved metasurface for independent control and overlaying of spin eigenstates.
  • To showcase applications in optical communication and information security.

Main Methods:

  • Design and fabrication of a single-layer, non-interleaved metasurface.
  • Implementation of AM holography by independently controlling spin eigenstates.
  • Demonstration of dual-functional AM meta-hologram for reconstructing spin-orbital locked and spin-superimposed images.
  • Development of a novel optical nested encryption scheme.

Main Results:

  • Successfully demonstrated AM holography by synergizing OAM and SAM dimensions.
  • Achieved independent control and arbitrary overlaying of two spin eigenstates.
  • Reconstructed two sets of holographic images: spin-orbital locked and spin-superimposed.
  • Implemented a novel optical nested encryption scheme for parallel information transmission with high capacity and security.

Conclusions:

  • AM holography offers a new paradigm for manipulating angular momentum.
  • The developed metasurface enables parallel information transmission with ultra-high capacity and security.
  • This work holds significant promise for optical communication, information security, and quantum science.