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Simulation, Fabrication and Characterization of THz Metamaterial Absorbers
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Optically Transparent Metamaterial Absorber Using Inkjet Printing Technology.

Heijun Jeong1, Manos M Tentzeris2, Sungjoon Lim3

  • 1School of Electrical and Electronics Engineering, College of Engineering, Chung-Ang University, Seoul 06974, Korea. jhijun000015@gmail.com.

Materials (Basel, Switzerland)
|October 20, 2019
PubMed
Summary
This summary is machine-generated.

This study introduces an optically transparent metamaterial absorber fabricated using inkjet printing. The novel design achieves high absorption across a specific frequency band, demonstrating a new method for transparent electronic materials.

Keywords:
electromagnetic absorberinkjet printingmetamaterialstransparent absorber

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Area of Science:

  • Metamaterial absorbers
  • Optically transparent electronics
  • Inkjet printing technology

Background:

  • Traditional metamaterial absorbers often lack optical transparency, limiting their applications in integrated optoelectronic devices.
  • The development of transparent conductive materials and fabrication techniques is crucial for advancing transparent electronic systems.

Purpose of the Study:

  • To propose and demonstrate an optically transparent metamaterial absorber.
  • To utilize inkjet printing for fabricating a transparent metamaterial absorber with specific electromagnetic characteristics.

Main Methods:

  • Fabrication of a metamaterial absorber using inkjet printing on polyethylene terephthalate (PET) films.
  • Inclusion of a thin conductive loop pattern (0.2 mm width) on the top surface.
  • Integration of an optically transparent indium tin oxide (ITO) film for the bottom ground plane.
  • Validation through full-wave electromagnetic simulation and free-space measurement.

Main Results:

  • The fabricated metamaterial absorber is optically transparent.
  • Simulated 90% absorption bandwidth: 26.6–28.8 GHz.
  • Measured 90% absorption bandwidth: 26.8–28.2 GHz.
  • Successful demonstration of the metamaterial absorber's performance via simulation and measurement.

Conclusions:

  • Inkjet printing is a viable technique for fabricating optically transparent metamaterial absorbers.
  • The proposed design effectively achieves high absorption within the targeted microwave frequency range while maintaining optical transparency.
  • This work presents a promising approach for transparent microwave devices and integrated systems.