Search research articles

ABOUT JoVE

Overview Leadership Blog JoVE Help Center

AUTHORS

Publishing Process Editorial Board Scope & Policies Peer Review FAQ Submit

LIBRARIANS

Testimonials Subscriptions Access Resources Library Advisory Board FAQ

RESEARCH

JoVE Journal Methods Collections JoVE Encyclopedia of Experiments Archive

EDUCATION

JoVE Core JoVE Business JoVE Science Education JoVE Lab Manual Faculty Resource Center Faculty Site

Terms & Conditions of Use

Related Concept Videos

Colors and Magnetism

Colors and Magnetism

Color in Coordination Complexes
When atoms or molecules absorb light at the proper frequency, their electrons are excited to higher-energy orbitals. For many main group atoms and molecules, the absorbed photons are in the ultraviolet range of the electromagnetic spectrum, which cannot be detected by the human eye. For coordination compounds, the energy difference between the d orbitals often allows photons in the visible range to be absorbed and emitted, which is seen as colors by the human...

Color Vision

Color Vision

Color perception begins in the retina, the light-sensitive layer at the back of the eye. Two main theories explain how colors are seen: the trichromatic theory and the opponent-process theory. The trichromatic theory, proposed by Thomas Young in 1802 and extended by Hermann von Helmholtz in 1852, suggests that color vision is based on three types of cone receptors in the retina. These cones are sensitive to different but overlapping ranges of wavelengths corresponding to red, blue, and green.

Changes in Skin Color: Clinical Perspectives

Changes in Skin Color: Clinical Perspectives

The first thing a clinician sees is the skin, so the examination of the skin should be part of any thorough physical examination. Most skin disorders are relatively benign, but a few, including melanomas, can be fatal if untreated. A couple of the more noticeable disorders, albinism and vitiligo, affect the appearance of the skin and its accessory organs.
Albinism
Albinism is a genetic disorder that affects (completely or partially) the coloring of skin, hair, and eyes. The defect is primarily...

$Interference and Diffraction$ 02:18

Interference and Diffraction

Interference is a characteristic phenomenon exhibited by waves. When two electromagnetic waves interact with their peaks and troughs coinciding, a resulting wave with enhanced amplitude is produced. This is known as constructive interference. In this case, the two waves interacting are in phase with each other.

Assessment of Airway, Skin Color, and Use of Accessory Muscles

Assessment of Airway, Skin Color, and Use of Accessory Muscles

A thorough assessment of respiratory health is paramount in clinical settings to identify and manage respiratory distress and ensure adequate oxygenation. This article elaborates on the critical aspects of respiratory evaluation, including airway assessment, skin color examination, and the observation of accessory muscle use, which are integral to effectively diagnosing and managing patients with respiratory conditions.
Introduction
The initial evaluation of a patient's respiratory system...

Generation of Three-Phase Voltage

Generation of Three-Phase Voltage

A three-phase AC generator has a rotor with a rotating magnet placed within the stator mounted with the stationary three-phase winding to generate three-phase voltages via mutual induction. These windings are evenly distributed around the inner circumference of the stator and are arranged 120 electrical degrees apart. Three-phase stator windings consist of three separate coils or groups of coils, known as phases, each connected in Y (star) configuration or Delta configuration.
As the rotor...

You might also read

Related Articles

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

Sort by

Same author

Taxonomy, Host Associations, and Life Cycles of Four Rust Fungi Associated with <i>Prunus</i> spp. in Korea.

Mycobiology·2026

Same author

Ice Nucleation Activity by <i>Fusarium tricinctum</i> Can Enhance Cold Stress: A Potential Contributor to Cold Injury in Apple Trees.

Mycobiology·2026

Same author

Polarization-Independent Metasurface Color Filter with Side-Peak Suppression in Metallic Nanohole Array.

Sensors (Basel, Switzerland)·2026

Same author

Geometrical Design Schemes for the 2T0C DRAM Cell Using a Vertical Stack Transistor with a Distinctive Single IGZO Active Layer.

ACS applied materials & interfaces·2026

Same author

Megakaryocyte and platelet thrombospondin-1 regulates matrix remodeling by stabilizing basement membrane COL6A1 in lung injury.

Nature communications·2026

Same author

The complete mitochondrial genome of <i>Fusicolla acetilerea</i> (Nectriaceae, Hypocreales).

Mitochondrial DNA. Part B, Resources·2026

Search research articles

Related Experiment Video

Updated: Feb 4, 2026

Recording Ultra-Realistic Full-Color Analog Holograms for Use in a Moving Hologram Display

Recording Ultra-Realistic Full-Color Analog Holograms for Use in a Moving Hologram Display

Published on: January 14, 2020

Rewritable full-color computer-generated holograms based on color-selective diffractive optical components including

Chi-Young Hwang¹, Gi Heon Kim, Jong-Heon Yang

¹Reality Display Device Research Group, Electronics and Telecommunications Research Institute, Daejeon 34129, Republic of Korea. cyhwang@etri.re.kr yhakim@etri.re.kr.

|September 27, 2018

Summary

This summary is machine-generated.

Researchers developed rewritable full-color computer-generated holograms (CGHs) using phase-change materials. This technology allows for easy erasure and rewriting of holographic images, paving the way for dynamic holographic displays.

More Related Videos

Training Synesthetic Letter-color Associations by Reading in Color

Training Synesthetic Letter-color Associations by Reading in Color

Published on: February 20, 2014

Visualizing Bacterial Motility Based on a Color Reaction

Visualizing Bacterial Motility Based on a Color Reaction

Published on: February 15, 2022

Related Experiment Videos

Last Updated: Feb 4, 2026

Recording Ultra-Realistic Full-Color Analog Holograms for Use in a Moving Hologram Display

Recording Ultra-Realistic Full-Color Analog Holograms for Use in a Moving Hologram Display

Published on: January 14, 2020

Training Synesthetic Letter-color Associations by Reading in Color

Training Synesthetic Letter-color Associations by Reading in Color

Published on: February 20, 2014

Visualizing Bacterial Motility Based on a Color Reaction

Visualizing Bacterial Motility Based on a Color Reaction

Published on: February 15, 2022

Area of Science:

Optics and Photonics
Materials Science
Holography

Background:

Traditional computer-generated holograms (CGHs) often lack rewritability and full-color capabilities.
Phase-change materials offer unique optical properties for dynamic holographic applications.

Purpose of the Study:

To propose and demonstrate rewritable full-color CGHs using a novel diffractive optical component.
To leverage the resonant characteristics of phase-change materials for color-selective diffraction.

Main Methods:

Fabrication of an ultrathin Ge2Sb2Te5 (GST) layer structured with amorphous and crystalline states.
Utilizing pulsed ultraviolet laser writing for pattern erasure and rewriting.
Experimental reconstruction of three-dimensional holographic images from the fabricated CGH.

Main Results:

Successful demonstration of a rewritable CGH with a 2 μm pixel pitch and 32.8 × 32.8 mm2 size.
Experimental verification of the CGH's ability to reconstruct three-dimensional holographic images.
Confirmation of the rewritable property through partial erasure and rewriting of the CGH pattern.

Conclusions:

The proposed GST-based diffractive optical component enables rewritable full-color CGHs.
The thermally reconfigurable nature of GST is key to the dynamic holographic capabilities.
This technology holds potential for advanced holographic display and information storage systems.