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This study introduces a novel metamaterial that actively reconfigures electromagnetic scattering properties for enhanced survivability. The material offers significant electromagnetic absorption and camouflage capabilities for advanced stealth technology.

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Area of Science:

  • Materials Science
  • Electromagnetics
  • Metamaterials

Background:

  • Advanced radar systems necessitate adaptable electromagnetic (EM) scattering properties for target survivability.
  • Current technologies face challenges in dynamically controlling EM signatures for effective camouflage and electronic warfare.

Purpose of the Study:

  • To design and demonstrate a multifunctional metamaterial with reconfigurable EM scattering properties.
  • To leverage a bistable curved beam structure for dynamic EM signature control.
  • To explore applications in stealth technology, electronic countermeasures, and deception jamming.

Main Methods:

  • Design of a novel metamaterial utilizing a bistable curved beam.
  • Characterization of EM absorption and scattering properties across a wide frequency range.
  • Integration of digital coding for continuous adjustment of absorption bandwidth and EM response.

Main Results:

  • Achieved over 90% EM absorption from 2.17-17.31 GHz with a relative thickness of 0.09λL.
  • Demonstrated the ability to switch between states due to the bistable nature of the metamaterial.
  • Showcased continuous adjustment of absorbing bandwidth and enhanced EM absorption rates via digital coding.

Conclusions:

  • The developed metamaterial offers significant EM absorption and tunable scattering properties.
  • Its bistable and digitally controllable nature enables dynamic camouflage and reduced radar cross-section.
  • Presents innovative solutions for next-generation stealth, electronic countermeasures, and deception jamming applications.