Journal
RESULTS IN PHYSICS
Volume 24, Issue -, Pages -Publisher
ELSEVIER
DOI: 10.1016/j.rinp.2021.104129
Keywords
Refractive index sensor; All-dielectric; Fano resonance; Mid-infrared region
Funding
- National Natural Science Foundation of China [61735018, 61805242]
- Scientific and Technological Development Project of Jilin province [20190103014JH]
- Excellent Member of Youth Innovation Promotion Association CAS [Y201836, 2014193]
- Leading Talents and Team Project of Scientific and Technological Innovation for Young and Middle-aged Groups in Jilin Province [20190101012JH]
- Project of CIOMP-Duke Collaborative Research [201903002]
- Project of CIOMP-Fudan University Collaborative Research
Ask authors/readers for more resources
A novel Fano resonance device based on periodical all-dielectric nanostructure was designed and analyzed for optical refractive index sensing, with high sensitivity, insensitivity to polarization and incident angle. The nanostructure showed a sensitivity of 986 nm/RIU and a maximum figure of merit of 32.7, outperforming metallic material sensors. This study could advance optical sensing, bio-sensing, and environmental monitoring.
We design and numerically analyze a Fano resonance device based on periodical all-dielectric lucky knot shaped nanostructure in the mid-infrared region with high sensitivity, which is insensitive to polarization and incident angle. The proposed nanostructure is sensitive to the change of the refractive index of the substance to be tested. We established the correspondence between the change of the refractive index and the peak position of the reflection spectrum. And then we propose an optical refractive index sensor with a sensitivity of 986 nm/RIU, and a maximum figure of merit of 32.7, which is much higher compared to the sensor based on metallic materials. The maximum Q-factor can reach 520. This study may provide a further step in optical sensing, bio-sensing and environmental monitoring.
Authors
I am an author on this paper
Click your name to claim this paper and add it to your profile.
Reviews
Recommended
No Data Available