课题组电磁黑洞相关研究成果在Optics Express发表
发布时间：2013-07-30
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- 发布时间：
- 2013-07-30
- 文章标题：
- 课题组电磁黑洞相关研究成果在Optics Express发表
- 内容：
Optics Express Vol. 21, Iss. 16, pp. 19082–19090 (2013)
A Broadband and omnidirectional electromagnetic wave concentrator with gradient woodpile structureMing Yin, Xiao Yong Tian*, Ling Ling Wu, and Di Chen LiState Key Laboratory for Manufacturing Systems Engineering, Xi’an Jiaotong University, Xi'an, 710049, China*leoxyt@mail.xjtu.edu.cnAbstract: We present the first realized three-dimensional (3D) practical implementation of the so called “optical black hole” in microwave frequencies, an electromagnetic (EM) concentrator. The 3D EM wave concentrator was designed with non-resonant gradient index (GRIN) 3D woodpile photonic crystals (PCs) structure in metamaterial regime, and fabricated by Stereolithography (SL) process. Omnidirectional EM wave capture and absorbing ability of the device in a broad bandwidth (12GHz-15GHz) were validated by full-wave simulation and experiments. Such devices may have applications in microwave energy harvesting and radiation detector.Ó2013 Optical Society of AmericaOCIS codes: (220.0220) General; (160.3918) General science; (160.5298) Photonic crystals.