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

Beams01:30

Beams

1.8K
Beams are integral components of structural engineering and construction, designed to support loads applied at various points along their length. These long, straight members can be classified based on geometry, cross-section, support type, and equilibrium condition.
Based on geometry, beams can be straight, tapered, or curved. Straight beams are the most common type and have a constant cross-section throughout their length. Tapered beams, on the other hand, have a varying cross-section along...
1.8K
Deflection of a Beam01:19

Deflection of a Beam

715
Accurately determining beam deflection and slope under various loading conditions in structural engineering is crucial for ensuring safety and structural integrity. Singularity functions offer a streamlined approach to analyzing beams, especially when multiple loading functions complicate the bending moment equation.
Singularity functions, described in an earlier lesson, are powerful mathematical tools that represent discontinuities within a function commonly encountered in structural loading...
715
Prismatic Beams: Problem Solving01:15

Prismatic Beams: Problem Solving

452
In the design of a supported timber beam subjected to a distributed load, both the beam's physical dimensions and the timber's characteristics, such as its grade and species, are critical. These factors determine the allowable stress values, which are crucial for calculating the necessary beam depth to ensure structural integrity and safety.
The design begins with analyzing the beam as a free body to identify moments and force balances, thereby determining support reactions. Next, the...
452
Principal Stresses in a Beam01:11

Principal Stresses in a Beam

713
In prismatic beams subject to arbitrary transverse loading, It is essential to analyze the interaction between shear forces and bending moments in order to understand stress distribution and ensure structural integrity. The highest normal or bending stress occurs at the outer fibers of the beam, decreasing linearly to zero at the neutral axis. In contrast, shear stress peaks at the neutral axis and diminishes toward the outer surfaces.
Analyzing principal stresses is crucial, especially in...
713
Beams with Symmetric Loadings01:15

Beams with Symmetric Loadings

409
The moment-area method is an analytical tool used in structural engineering to determine the slope and deflection of beams under various loads. Consider a cantilever with a concentrated load and moment at the free end. The first step is constructing a free-body diagram to calculate the reactions at the fixed end. Next, the bending moment diagram is plotted to visualize how the bending moment varies along the beam's length, focusing on points where the bending moment equals zero.
The M/EI...
409
Beams with Unsymmetric Loadings01:17

Beams with Unsymmetric Loadings

424
Analyzing a supported beam under unsymmetrical loadings is essential in structural engineering to understand how beams respond to varied force distributions. This analysis involves calculating the deflection and identifying points where the slope of the beam is zero, which are crucial for ensuring structural stability and functionality.
The first moment-area theorem determines the slope at any point on the beam. This theorem indicates that the change in slope between two points on a beam...
424

You might also read

Related Articles

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

Sort by
Same author

Unlocking complex optical vortices with flat optics.

Reports on progress in physics. Physical Society (Great Britain)·2026
Same author

Highly tunable band structure in ferroelectric R-stacked bilayer WSe<sub>2</sub>.

Nature communications·2026
Same author

Vector Vortex Beam-Enabled Edge Microscopy with Dynamic Orientation Selectivity.

ACS photonics·2025
Same author

High-capacity directional information processor using all-optical multilayered neural networks.

Science advances·2025
Same author

Evolution of dispersion-engineered metasurfaces: Debye relaxation and folded path concept.

Light, science & applications·2025
Same author

Customizing Multicolored Orbital Angular Momentum Combs.

Nano letters·2025

Related Experiment Video

Updated: Jan 28, 2026

Uncovering Hidden Dynamics of Natural Photonic Structures Using Holographic Imaging
05:45

Uncovering Hidden Dynamics of Natural Photonic Structures Using Holographic Imaging

Published on: March 31, 2022

3.1K

High-resolution grayscale image hidden in a laser beam.

Fuyong Yue1, Chunmei Zhang1, Xiao-Fei Zang1,2

  • 1SUPA, Institute of Photonics and Quantum Sciences, School of Engineering and Physical Sciences, Heriot-Watt University, Edinburgh EH14 4AS, UK.

Light, Science & Applications
|March 7, 2019
PubMed
Summary
This summary is machine-generated.

Researchers hid a high-resolution grayscale image within a laser beam using polarization states. This novel optical encryption method can be revealed with a linear polarizer, opening doors for secure communications and advanced imaging.

Keywords:
grayscale imagemetasurfacepolarization manipulation

More Related Videos

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

10.4K
Femtosecond Laser Filaments for Use in Sub-Diffraction-Limited Imaging and Remote Sensing
06:16

Femtosecond Laser Filaments for Use in Sub-Diffraction-Limited Imaging and Remote Sensing

Published on: April 25, 2019

8.0K

Related Experiment Videos

Last Updated: Jan 28, 2026

Uncovering Hidden Dynamics of Natural Photonic Structures Using Holographic Imaging
05:45

Uncovering Hidden Dynamics of Natural Photonic Structures Using Holographic Imaging

Published on: March 31, 2022

3.1K
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

10.4K
Femtosecond Laser Filaments for Use in Sub-Diffraction-Limited Imaging and Remote Sensing
06:16

Femtosecond Laser Filaments for Use in Sub-Diffraction-Limited Imaging and Remote Sensing

Published on: April 25, 2019

8.0K

Area of Science:

  • Optics and Photonics
  • Information Security
  • Quantum Science

Background:

  • Traditional images rely on intensity and color variations.
  • Information can also be encoded in light's phase or polarization.
  • Some encoded images have uniform intensity, making them invisible to standard cameras.

Purpose of the Study:

  • To propose and demonstrate a method for hiding high-resolution grayscale images in laser beams.
  • To encode image data into the spatially varying polarization states of light.
  • To reveal the hidden image using optical components.

Main Methods:

  • Encoding a 300 × 300 nm pixel-sized grayscale image into the polarization states of a sub-millimeter square laser beam.
  • Experimental demonstration of the image encoding and retrieval process.
  • Utilizing a linear polarizer to reconstruct the hidden image.

Main Results:

  • Successful hiding of a high-resolution grayscale image within a laser beam.
  • Demonstration of image retrieval through polarization manipulation.
  • The encoded image exhibited a uniform intensity profile, rendering it invisible initially.

Conclusions:

  • The proposed technique effectively hides grayscale images in laser beams using polarization.
  • This polarization manipulation technology offers potential for encryption, imaging, and optical communications.
  • The method has implications for quantum science and fundamental physics research.