Wu Tingting, Luo Yu, Wei Lei
Opt Lett. 2017 Jun 1;42(11):2066-2069. doi: 10.1364/OL.42.002066.
We study the tunable plasmons based on a graphene integrated gold grating structure to sense the vibrational modes of nanometric molecules. The greatly enhanced light-matter interaction and the broadband tunability of the localized graphene plasmonic resonance enable accurate label-free identification of the molecular vibrational modes at subwavelength scale. Our results may accelerate the further development of novel cost-effective biosensors with superior molecular chemical fingerprint sensitivity in an active graphene plasmonic device.
我们研究了基于石墨烯集成金光栅结构的可调谐等离子体激元，以探测纳米级分子的振动模式。石墨烯局部等离子体激元共振极大增强的光与物质相互作用及宽带可调谐性，使得在亚波长尺度上能够对分子振动模式进行精确的无标记识别。我们的结果可能会加速新型具有成本效益的生物传感器的进一步发展，这种传感器在有源石墨烯等离子体激元器件中具有卓越的分子化学指纹灵敏度。
