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Related Experiment Video

Updated: May 18, 2026

Demonstration of Spin-Multiplexed and Direction-Multiplexed All-Dielectric Visible Metaholograms

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Published on: September 25, 2020

dc electric invisibility cloak.

Fan Yang¹, Zhong Lei Mei, Tian Yu Jin

¹School of Information Science and Engineering, Lanzhou University, People's Republic of China.

Physical Review Letters

|September 26, 2012

Summary

This summary is machine-generated.

Researchers demonstrate the first direct current (dc) electric cloak, guiding currents around an object. This dc invisibility cloak achieves nearly perfect performance, with potential applications in various fields.

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Area of Science:

Electromagnetism
Materials Science
Electrical Engineering

Background:

The manipulation of electromagnetic fields has led to concepts like invisibility cloaks.
Previous cloaking research has primarily focused on wave phenomena, not steady current fields.

Purpose of the Study:

To experimentally demonstrate a direct current (dc) electric cloak for steady current fields.
To validate the design and performance of a dc invisibility cloak using circuit theory.

Main Methods:

Designing and fabricating a dc electric cloak based on the analogy between conducting materials and resistor networks.
Testing the cloak's performance using circuit theory and comparing experimental data with theoretical predictions and simulations.

Main Results:

Successful experimental demonstration of a dc electric cloak for steady current fields.
The cloak effectively guided electric currents around the cloaked region with minimal perturbation outside.
Measurement data showed excellent agreement with theoretical predictions and simulations, indicating nearly perfect cloaking performance.

Conclusions:

The proposed method provides the first experimental proof of concept for dc electric cloaking.
This technique can be extended to create other dc electric devices utilizing anisotropic conductivities.
Potential applications include electric impedance tomography, graphene research, natural resource exploration, and military camouflage.