Opt Lett. 2018 Jun 1;43(11):2636-2639. doi: 10.1364/OL.43.002636.
A strong and dynamically controlled circular dichroism (CD) effect has aroused great attention due to its desirable applications in modern chemistry and life sciences. In this Letter, we propose a graphene-metal hybrid chiral metamaterial to generate mid-infrared CD with an intensity of more than 10%, which can be actively controlled over a wide wavelength range. In addition to the strong tunability, the CD signal intensity of our nanostructure is drastically larger than that of the purely graphene-based chiroptical nanostructures. Our design offers a new strategy for developing tunable chiral metadevices, which could be used in various applications, such as biochemical detection and information processing.
由于其在现代化学和生命科学中的应用前景，强而动态可控的圆二色性（CD）效应引起了极大的关注。在这封信件中，我们提出了一种石墨烯-金属杂化手性超材料，可产生强度超过 10%的中红外 CD，且其波长范围可实现主动控制。除了强可调性之外，我们的纳米结构的 CD 信号强度也明显大于纯基于石墨烯的手性光学纳米结构。我们的设计为开发可调谐手性元器件提供了一种新策略，可用于生化检测和信息处理等各种应用。
