Microwave absorption in photonic crystals composed of SiC/resin with a diamond structure
Microwave absorption in photonic crystals composed of SiC/resin with a diamond structure
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DOI：
10.1111/j.1551-2916.2006.01071.x
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发表时间：
2006-08-01
影响因子：
3.9
通讯作者：
Zhang, Di
中科院分区：
文献类型：
--
作者：
Liu, Zhaoting;Kirihara, Soshu;Zhang, Di
采用SiC/聚酯混合物浸润环氧树脂模具的方法制备了三维光子晶体。利用光固化快速成型技术制备了具有正金刚石结构和反金刚石结构的环氧树脂模具。模具尺寸为45 mm × 18 mm × 18 mm，光子晶体晶格常数为18 mm，研究了环氧树脂模具类型、长径比（金刚石晶格棒的高径比）和样品单元数对光子晶体带隙形成和沿着方向微波吸收能力的影响< 100 >。利用网络分析仪测量了3-12 GHz频率范围内光子晶体样品的微波透射和反射衰减。结果表明，吸收材料SiC和金刚石结构的结合具有双重作用，形成了具有高吸收能力的光子晶体。
Three-dimensional photonic crystals were fabricated by infiltrating an epoxy mold with a SiC/polyester mixture. The epoxy molds with normal or inverse diamond structures were formed by stereolithography. The size of the mold was 45 mm x 18 mm x 18mm, and the lattice constant of the photonic crystals was 18 mm. The effects of the epoxy mold type, aspect ratio (the ratio of height and diameter of a diamond lattice rod), and number of sample units on the formation of photonic band gap (PBG) and microwave absorption ability along the < 100 > direction were studied. The attenuations of microwave transmission and reflection were measured through the photonic crystal samples at a frequency range of 3-12 GHz with a network analyzer. The results obtained suggest that the combination of the absorbing material SiC and diamond structure has a dual effect to form a PBG with a high absorption ability.