Related Experiment Video
Updated: Jun 16, 2026

Simulation, Fabrication and Characterization of THz Metamaterial Absorbers
Published on: December 27, 2012
Intelligent Tunable Wave-Absorbing CNTs/VO2/ANF Composite Aerogels Based on Temperature-Driving
Shunan Wang1, Xiuqing Hao1, Yijie Liu2,3
1College of Mechanical and Electrical Engineering, Nanjing University of Aeronautics & Astronautics, Nanjing, Jiangsu 210016, China.
Researchers developed novel CNTs/VO2/ANF composite aerogels for intelligent electromagnetic wave absorption. These materials offer dynamic frequency tunability and switchable absorption, crucial for modern radar applications.
Area of Science:
- Materials Science
- Electromagnetics
- Nanotechnology
Background:
- Traditional electromagnetic absorbing materials lack dynamic performance adjustment.
- Intelligent modulation is crucial for advanced radar and information age complexities.
- Developing tunable and switchable absorbers is a significant research area.
Purpose of the Study:
- To synthesize CNTs/VO2/ANF composite aerogels with dynamic frequency tunability and switchable absorption.
- To investigate the temperature-dependent modulation of electromagnetic wave absorption properties.
- To explore the potential for intelligent electromagnetic absorbers.
Main Methods:
- Synthesis of CNTs/VO2/ANF composite aerogels.
- Utilizing the phase change behavior of Vanadium Dioxide (VO2) for modulation.
- Modulating polarization and interfacial effects at heterogeneous interfaces via temperature control.
Main Results:
- Achieved dynamic frequency modulation from 12.24 GHz to 8.56 GHz in the X-band with stable absorption intensity.
- Demonstrated switchable absorption with a maximum effective absorption bandwidth (ΔEAB) of 3.70 GHz.
- Successfully correlated temperature changes with electromagnetic absorption performance.
Conclusions:
- The synthesized aerogels exhibit intelligent, temperature-driven electromagnetic wave absorption.
- This work provides insights into advanced electromagnetic absorbers with tunable and switchable functionalities.
- Paves the way for practical applications of intelligent electromagnetic absorbers.
More Related Videos
Related Concept Videos
Physiological Control of Respiration
Breathing, a seemingly passive process, is regulated by the respiratory center in the brainstem. This center coordinates the involuntary control of respirations, which means it occurs without conscious effort, ensuring a smooth and uninterrupted pattern.
Regulation of Ventilation
The body maintains ventilation by monitoring levels of carbon dioxide (CO2), oxygen (O2), and hydrogen ion concentration (pH) in the arterial blood. Among these factors, the level of CO2 plays a crucial...
Neural Control of Respiration
Respiratory Centers in the Brainstem
Two primary areas comprise the respiratory center: the medullary respiratory center in the medulla oblongata and the pontine respiratory group in the pons. The...
Chemical Factors Affecting Respiration Centers
CO2 has a potent influence on respiration and is strictly regulated. Under...
Other Factors Affecting Respiration Centers
However, the ability to hold one's breath voluntarily is not limitless. When the CO2 concentration in the blood reaches a critical level,...
Physiology of Respiration II: Neurogenic Control of Respiration
Central Control
The brainstem is the primary site of central control, hosting respiratory centers:
Bioreactor Controls-I

