石墨烯
材料科学
等离子体子
光电子学
超材料
纳米光子学
吸收(声学)
超材料吸收剂
电介质
极化(电化学)
吸光度
光学
纳米技术
化学
物理
可调谐超材料
物理化学
复合材料
作者
Yijun Cai,Jinfeng Zhu,Qing Liu
摘要
Enhancement and manipulation of light absorption in graphene is a significant issue for applications of graphene-based optoelectronic devices. In order to achieve this purpose in the visible region, we demonstrate a design of a graphene optical absorber inspired by metal-dielectric-metal metamaterial for perfect absorption of electromagnetic waves. The optical absorbance ratios of single and three atomic layer graphene are enhanced up to 37.5% and 64.8%, respectively. The graphene absorber shows polarization-dependence and tolerates a wide range of incident angles. Furthermore, the peak position and bandwidth of graphene absorption spectra are tunable in a wide wavelength range through a specific structural configuration. These results imply that graphene in combination with plasmonic perfect absorbers have a promising potential for developing advanced nanophotonic devices.
科研通智能强力驱动
Strongly Powered by AbleSci AI