Article ID | Journal | Published Year | Pages | File Type |
---|---|---|---|---|
10425098 | Composites Science and Technology | 2012 | 5 Pages |
Abstract
Porous graphitic carbons encapsulating Fe nanoparticles (PGCFs) were fabricated by infiltrating activated carbon (AC) with an iron salt and thereafter heat-treating the products in vacuum, and the electromagnetic parameters of the PGCF were investigated over 2-18Â GHz frequency. The results demonstrated that the formation of porous graphitic network encapsulating Fe nanoparticles endowed the composite a very high permittivity and dielectric loss at 2-18Â GHz. Return loss (RL) for the PGCF-based absorbers were investigated based on the measured electromagnetic parameters. A typical dual-layer absorber exhibited an excellent microwave absorption with a 43Â dB maximum absorption at 10Â GHz and a nearly 7Â GHz bandwidth for RLÂ <Â â20Â dB.
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Authors
Qinglei Liu, Bin Cao, Chuanliang Feng, Wang Zhang, Shenmin Zhu, Di Zhang,