Department of Physics, National Taiwan University, Taipei 10617, Taiwan.
Department of Opto-electronic Engineering, National Dong Hwa University, Hualien 97401, Taiwan.
Sci Rep. 2017 Feb 6;7:42076. doi: 10.1038/srep42076.
A high Q-value reflective type metasurface consisting of 1D Au nanorods, a SiO spacer and a Au back reflector is demonstrated. It is shown that the sideband of the resonant mode can be suppressed as the resonant wavelength close to the phonon absorption of SiO. By combining both designed structured resonance and inherent property of the based materials, a low angle-dependent metasurface with a Q-value of 40 has been demonstrated. The proposed structure will be useful for high sensitivity sensing and narrow band thermal emitter.
本文展示了一种由一维金纳米棒、SiO 间隔层和金背反射器组成的高 Q 值反射型超表面。研究表明，当共振波长接近 SiO 的声子吸收时，共振模的边带可以被抑制。通过结合设计的结构共振和基础材料的固有特性，本文展示了一种具有 40 的 Q 值的低角度相关超表面。所提出的结构将有助于实现高灵敏度传感和窄带热发射器。
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