Related Experiment Video
Updated: Aug 17, 2025
13:44
Simulation, Fabrication and Characterization of THz Metamaterial Absorbers
Published on: December 27, 2012
15.4K
An Amplitude-Modulated Metadevice with Switchable Reflection, Transmission, and Absorption
Sheng Ye1, Chengye Huang1, Jinglin He1
1Faculty of Electrical Engineering and Computer Science, Ningbo University, Ningbo 315211, China.
Nanomaterials (Basel, Switzerland)
|December 11, 2022
Summary
This study presents a reconfigurable metadevice with independent polarization control. It achieves tunable transmission, reflection, and absorption functionalities for advanced wireless communication applications.
Area of Science:
- Electromagnetics and Metamaterials
- Applied Physics
- Electrical Engineering
Background:
- Metadevices offer unique electromagnetic properties.
- Reconfigurable functionalities are crucial for advanced applications.
- Independent polarization control remains a challenge.
Purpose of the Study:
- To propose a reconfigurable metadevice with independent polarization control.
- To achieve broadband high-efficiency transmission, reflection, and perfect absorption.
- To explore coding metadevices for diversified functionalities.
Main Methods:
- Design of a 90° rotationally symmetric microstructure.
- Integration of PIN diodes for switching functionalities.
- Analysis using electric field distribution, power loss, impedance, and equivalent circuits.
Main Results:
- Demonstrated switching between transmission, reflection, and absorption.
- Achieved significantly improved absorption bandwidth by controlling diodes.
- Enabled reflected dual/multi-beam modulation through coding sequences.
- Experimental results validated simulation findings.
Conclusions:
- The proposed reconfigurable metadevice offers independent polarization control.
- It integrates multiple functionalities (transmission, reflection, absorption) with high efficiency.
- Potential applications include intelligent wireless communication, electronic detection, sensors, and stealth radomes.
Related Concept Videos
01:22Atomic Absorption Spectroscopy: Instrumentation
830
An atomic absorption spectrophotometer (AAS) comprises several components: a radiation source, an atomizer, a monochromator, and a detector. The radiation source can be a hollow-cathode lamp (HCL) or an electrodeless-discharge lamp (EDL), both of which provide a narrow emission line of the required wavelength. However, some instruments use continuum sources and high-resolution monochromators to achieve a narrow range of radiation.
The atomizer used in AAS can be either a flame atomizer or an...
The atomizer used in AAS can be either a flame atomizer or an...
830
01:18Clipper Circuit
518
A clipper circuit is a fundamental wave-shaping device that harnesses the unique properties of diodes to alter and control waveform characteristics. This technology is widely used in electronic devices, especially in television and radar communication systems, where it enhances waveform modulation in both transmitters and receivers.
The operation of a clipper circuit can be exemplified by analyzing a dual-clipper configuration setup that integrates two ideal diodes, each paired with a biasing...
The operation of a clipper circuit can be exemplified by analyzing a dual-clipper configuration setup that integrates two ideal diodes, each paired with a biasing...
518