Design and Development of Expanded Graphite-Based Non-metallic and Flexible Metamaterial Absorber for X-band Applications
| Autor: | Nidhi S. Bhattacharyya, Dipangkar Borah |
|---|---|
| Rok vydání: | 2016 |
| Předmět: |
Materials science
Solid-state physics X band Physics::Optics chemistry.chemical_element 02 engineering and technology 01 natural sciences Condensed Matter::Materials Science Optics 0103 physical sciences Materials Chemistry Graphite Electrical and Electronic Engineering 010302 applied physics business.industry Reflection loss Metamaterial 021001 nanoscience & nanotechnology Condensed Matter Physics Copper Electronic Optical and Magnetic Materials chemistry Metamaterial absorber Optoelectronics 0210 nano-technology business Science technology and society |
| Zdroj: | Journal of Electronic Materials. 46:226-232 |
| ISSN: | 1543-186X 0361-5235 |
| DOI: | 10.1007/s11664-016-4918-2 |
| Popis: | The possibility of using expanded graphite instead of a metallic layer as unit cells and ground planes for metamaterial absorbers in X-band is investigated. A metamaterial absorber was fabricated on a flexible linear low-density polyethylene substrate using an expanded graphite-based circular ring as the unit cell structure. The unit cell was simulated and optimized for which the metamaterial absorber exhibited 98.9% absorption at 11.22 GHz. The fabricated expanded graphite-based absorber showed a reflection loss of −24.51 dB at 11.56 GHz with −10 dB bandwidth of 0.39 GHz (3.37%). The performance of the same structure with copper was also measured. The expanded graphite-based metamaterial absorber showed enhanced performance as compared to the copper-based metamaterial absorber. The width of the ring was varied to tune the reflection loss. The proposed expanded graphite-based metamaterial absorber possesses the advantages of being ultra-thin, flexible and non-corrosive. |
| Databáze: | OpenAIRE |
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