期刊
CHINESE PHYSICS B
卷 20, 期 1, 页码 -出版社
IOP PUBLISHING LTD
DOI: 10.1088/1674-1056/20/1/017801
关键词
multiband; terahertz; electromagnetic resonance; metamaterial absorber
资金
- National Natural Science Foundation of China [60871027, 60901029, 61071058]
- National Basic Research Program of China [2009CB623306]
- Key Laboratory of Shaanxi Provincial Synthetic Electronic Information System Foundation, China [200905A]
This paper reports the design of a multiband metamaterial (MM) absorber in the terahertz region. Theoretical and simulated results show that the absorber has four distinct and strong absorption points at 1.69, 2.76, 3.41 and 5.06 THz, which are consistent with 'fingerprints' of some explosive materials. The retrieved material parameters show that the impedance of MM could be tuned to match approximately the impedance of the free space to minimise the reflectance at absorption frequencies and large power loss exists at absorption frequencies. The distribution of the power loss indicates that the absorber is an excellent electromagnetic wave collector: the wave is first trapped and reinforced in certain specific locations and then consumed. This multiband absorber has applications in the detection of explosives and materials characterisation.
作者
我是这篇论文的作者
点击您的名字以认领此论文并将其添加到您的个人资料中。
推荐
暂无数据