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|Title:||A close-ring pair terahertz metamaterial resonating at normal incidence|
|Citation:||Gu, J., Han, J., Lu, X., Singh, R., Tian, Z., Xing, Q., Zhang, W. (2009). A close-ring pair terahertz metamaterial resonating at normal incidence. Optics Express 17 (22) : 20307-20312. ScholarBank@NUS Repository. https://doi.org/10.1364/OE.17.020307|
|Abstract:||We present a systematic study of a close-ring pair based freestanding metamaterial fabricated by double-layer, self-aligned photolithography. Terahertz time-domain spectroscopy transmission measurements and numerical simulations have revealed negative index of refraction in the frequency range of 0.66-0.90 THz under normal wave incidence. The observed resonance behaviors can be well explained by a theoretical circuit model. The electromagnetic properties and the figure of merit of such close-ring metamaterials are also explored in terms of geometrical parameters of the unit cell with a goal of providing optimized design for three-dimensional metamaterials and potential device applications. ©2009 Optical. Society of America.|
|Source Title:||Optics Express|
|Appears in Collections:||Staff Publications|
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