Hybrid Metamaterials Made of Bilayer Graphene

为了实现石墨烯的超材料，建立了在硅基上沉积石墨烯的技术和利用微拉曼光谱表征其层/缺陷的方法。我们制备并表征了石墨烯超材料，并在6太赫兹（50 μm波长）下观察到独特的红外吸收。基于有限元法的数值模拟表明，红外吸收是由结构石墨烯中的局部等离子体共振引起的。

For the realization of graphene metamaterials, graphene deposition technique on a silicone substrate and their layer/defect characterization method using micro-Raman spectroscopy have been established. We have fabricated and characterized graphene metamaterials, and distinctive infrared absorptions were observed at 6 THz (50 μm in wavelength). The corresponding numerical simulation based on finite-element-method revealed that the infrared absorptions resulted from localized plasmon resonances in the structured graphene.