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Simulation, Fabrication and Characterization of THz Metamaterial Absorbers
Published on: December 27, 2012
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Metamaterial-plasma based hyperbolic material for sensor, detector and switching application at microwave region
Asish Kumar1, Narendra Kumar2, Girijesh N Pandey3
1Department of Physics, School of Physical and Decision Sciences, Babasaheb Bhimrao Ambedkar University (A Central University), Lucknow226025, India.
Summary
Meta-material-plasma based hyperbolic materials (MPHM) show superior absorption properties compared to superconductor-plasma based hyperbolic materials (SPHM). This research explores their potential for microwave sensor and detector applications.
Area of Science:
- Condensed Matter Physics
- Materials Science
- Electromagnetism
Background:
- Plasma-based composite hyperbolic materials, including superconductor-plasma based hyperbolic material (SPHM) and meta-material-plasma based hyperbolic materials (MPHM), are investigated.
- Effective medium theory is employed to analyze the permittivity characteristics of these materials.
Purpose of the Study:
- To investigate the optical properties and absorption spectra of one-dimensional ternary periodic structures (1DTPS) incorporating SPHM or MPHM.
- To compare the absorption performance of MPHM and SPHM within these structures.
Main Methods:
- Analysis of permittivity (real and imaginary parts) versus normalized frequency, considering variations in filling fraction.
- Utilized the transfer matrix method and Bloch's function to study the optical properties of 1DTPS.
- Investigated absorption spectra by varying incident angle, plasma electron collision frequency, and composite filling fraction.
Main Results:
- MPHM exhibited enhanced absorption spectra compared to SPHM in the studied 1DTPS.
- Permittivity analysis revealed frequency-dependent behavior influenced by material composition and filling fraction.
Conclusions:
- Meta-material-plasma based hyperbolic materials demonstrate promising absorption characteristics.
- MPHM shows potential for designing advanced sensors, detectors, and switching devices in the microwave region.
