Related Concept Videos
Light as Energy
Photons
A photon is a discrete electromagnetic particle or bundle of energy. Photons are characterized by their frequency, wavelength, and amplitude, similar to the properties of a wave. Waves with higher frequencies transmit more energy and have shorter wavelengths than longer wavelengths that transmit...
The Wave Nature of Light
Light Acquisition
Ultraviolet and Visible (UV–Vis) Spectroscopy: Overview
Photoreceptors and Plant Responses to Light
Focusing of Light in the Eye
You might also read
Related Articles
Articles linked to this work by shared authors, journal, and citation graph.
Near-Infrared Light Triggered Upconversion Optogenetic Nanosystem for Cancer Therapy.
Non-contact method to freely control the radiation patterns of antenna with multi-folded transformation optics.
Cost Effectiveness of Imatinib, Dasatinib, and Nilotinib as First-Line Treatment for Chronic-Phase Chronic Myeloid Leukemia in China.
Related Experiment Video
Updated: Feb 8, 2026

Inactivation of Pathogens via Visible-Light Photolysis of Riboflavin-5′-Phosphate
Published on: April 6, 2022
3D Visible-Light Invisibility Cloak.
Bin Zheng1,2, Rongrong Zhu1,2, Liqiao Jing1,2
1State Key Laboratory of Modern Optical Instrumentation Zhejiang University Hangzhou 310027 China.
Researchers developed a novel invisibility cloak that conceals large objects from view in visible light. This breakthrough simplifies the design of 3D cloaking devices using common materials.
Area of Science:
- Optics and Photonics
- Materials Science
- Electromagnetism
Background:
- Invisibility cloaks are a staple of science fiction but challenging to realize in visible light.
- Existing cloaking methods often bypass electromagnetic coupling issues by operating in specific conditions or media.
Purpose of the Study:
- To demonstrate the concealment of a large-scale spherical object from human sight.
- To simplify the design and material requirements for 3D invisibility cloaks.
Main Methods:
- Developed a 3D homogeneous polyhedral transformation.
- Implemented a spatially invariant refractive index discretization.
- Reduced the coupling of electromagnetic components of visible light.
Main Results:
- Successfully concealed a large-scale spherical object from three orthogonal viewpoints.
- Significantly reduced electromagnetic component coupling in visible light.
- Enabled simplified design for 3D invisibility cloaks.
Conclusions:
- The novel approach simplifies the creation of large-scale invisibility cloaks.
- Homogeneous and isotropic materials can be used for advanced cloaking applications.
- This research bridges the gap between theoretical invisibility and practical realization.

