scholarly journals Active Electromagnetically Induced Transparency Effect in Graphene-Dielectric Hybrid Metamaterial and Its High-Performance Sensor Application

Nanomaterials ◽  
2021 ◽  
Vol 11 (8) ◽  
pp. 2032
Author(s):  
Fan Gao ◽  
Peicheng Yuan ◽  
Shaojun Gao ◽  
Juan Deng ◽  
Zhiyu Sun ◽  
...  

Electromagnetically induced transparency (EIT) based on dielectric metamaterials has attracted attentions in recent years because of its functional manipulation of electromagnetic waves and high refractive index sensitivity, such as high transmission, sharp phase change, and large group delay, etc. In this paper, an active controlled EIT effect based on a graphene-dielectric hybrid metamaterial is proposed in the near infrared region. By changing the Fermi level of the top-covered graphene, a dynamic EIT effect with a high quality factor (Q-factor) is realized, which exhibits a tunable, slow, light performance with a maximum group index of 2500. Another intriguing characteristic of the EIT effect is its high refractive index sensitivity. In the graphene-covered metamaterial, the refractive index sensitivity is simulated as high as 411 nm/RIU and the figure-of-merit (FOM) is up to 159, which outperforms the metastructure without graphene. Therefore, the proposed graphene-covered dielectric metamaterial presents an active EIT effect in the near infrared region, which highlights its great application potential in deep optical switching, tunable slow light devices, and sensitive refractive index sensors, etc.

RSC Advances ◽  
2018 ◽  
Vol 8 (61) ◽  
pp. 35005-35013 ◽  
Author(s):  
Pengfei Cao ◽  
Huizhen Chen ◽  
Hailong Zhang ◽  
Lin Cheng ◽  
Tiaoming Niu

A high refractive index sensitivity of Au@Cu2−xS core–shell nanorods working in the near-infrared is theoretically demonstrated.


2012 ◽  
Vol 20 (9) ◽  
pp. 10180 ◽  
Author(s):  
Lipeng Sun ◽  
Jie Li ◽  
Yanzhen Tan ◽  
Xiang Shen ◽  
Xiaodong Xie ◽  
...  

2005 ◽  
Vol 30 (19) ◽  
pp. 2536 ◽  
Author(s):  
Andrea Cusano ◽  
Agostino Iadicicco ◽  
Pierluigi Pilla ◽  
Luigi Contessa ◽  
Stefania Campopiano ◽  
...  

Nanoscale ◽  
2020 ◽  
Vol 12 (39) ◽  
pp. 20250-20257 ◽  
Author(s):  
Hua Mi ◽  
Shengyan Wang ◽  
Hang Yin ◽  
Le Wang ◽  
Lin Mei ◽  
...  

AuTNP@Ag nanostructures are developed as nanoprobes for hydrogen sulfide. Owing to the high refractive index sensitivity of Au TNPs and facile sulfurization of silver, AuTNP@Ag nanostructures exhibit great sensitivity to both sulfur ions and H2S gas.


Plasmonics ◽  
2011 ◽  
Vol 7 (2) ◽  
pp. 331-339
Author(s):  
Philip J. R. Roche ◽  
Maurice Cha-Kiu Cheung ◽  
Sandrine Filion-Côté ◽  
Jonathan Milette ◽  
Timothy Gonzalez ◽  
...  

Author(s):  
Xianglong Wu ◽  
Ying Zheng ◽  
Yao Luo ◽  
Jianguo Zhang ◽  
Zao Yi ◽  
...  

A four-band terahertz tunable narrow-band perfect absorber based on Bulk Dirac semi-metallic (BDS) metamaterial with microstructure is designed. The three-layer structure of this absorber from top to bottom is the...


2017 ◽  
Vol 42 (7) ◽  
pp. 1245 ◽  
Author(s):  
Wen Zhou ◽  
Zhenzhou Cheng ◽  
Xinru Wu ◽  
Bingqing Zhu ◽  
Xiankai Sun ◽  
...  

Nanoscale ◽  
2016 ◽  
Vol 8 (38) ◽  
pp. 16841-16845 ◽  
Author(s):  
Alison F. Smith ◽  
Samantha M. Harvey ◽  
Sara E. Skrabalak ◽  
Rebecca G. Weiner

Sign in / Sign up

Export Citation Format

Share Document