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Near-field effects in multilayer inductive metal meshes
Karl D Möller1, Oren Sternberg, Haim Grebel
1Department of Physics and the Electronic Imaging Center, New Jersey Institute of Technology, Newark 07102, USA.
Applied Optics
|April 9, 2002
Summary
The study calculated transmittance for cross-shaped metal meshes. Symmetric and asymmetric alignments showed significant differences at small spacings, but these vanished with larger separations.
Area of Science:
- Electromagnetics and Optics
- Materials Science
Background:
- Inductive metal meshes are crucial components in various electromagnetic applications.
- Understanding the transmittance of multilayer structures is essential for device optimization.
Purpose of the Study:
- To calculate and analyze the transmittance of single-layer and multilayer inductive cross-shaped metal meshes.
- To investigate the impact of symmetric and asymmetric alignment between mesh layers on transmittance.
- To compare simulation results with transmission line theory for nonaligned cases.
Main Methods:
- Utilized Micro-Stripes software for transmittance calculations.
- Studied the effects of varying spacing and alignment between cross-shaped metal mesh layers.
- Employed coupled surface wave theory to model single mesh modes.
Main Results:
- Significant differences in transmittance were observed for small spacings (approx. 1/5 periodicity constant) between aligned and nonaligned meshes.
- These alignment-dependent differences diminished as the spacing increased.
- Transmittance in multilayer meshes was explained by coupled resonance modes of single meshes and Fabry-Perot modes.
Conclusions:
- Mesh alignment critically affects transmittance at sub-wavelength scales.
- The developed model accurately represents multilayer mesh transmittance through coupled single-mesh and Fabry-Perot modes.
- Findings provide insights for designing electromagnetic devices utilizing metal meshes.