Journal
SENSORS
Volume 16, Issue 6, Pages -Publisher
MDPI
DOI: 10.3390/s16060899
Keywords
sensor; surface plasmons; nanofluidic; conformal grapheme; infrared
Funding
- National High Technology Research and Development Program of China [2015AA034801]
- National Natural Science Foundation of China [61405021]
- Specialized Research Fund for the Doctoral Program of Higher Education [20120191120021]
- Natural Science Foundation of Chongqing, China [cstc2014jcyjA40045]
- Fundamental Research Funds for the Central Universities [CDJZR12120004, 106112013CDJZR120006]
Ask authors/readers for more resources
An all-in-one prism-free infrared sensor based on graphene surface plasmons is proposed for nanofluidic analysis. A conformal graphene-decorated nanofluidic sensor is employed to mimic the functions of a prism, sensing plate, and fluidic channel in the tradition setup. Simulation results show that the redshift of the resonant wavelength results in the improvement of sensitivity up to 4525 nm/RIU. To reshape the broadened spectral lines induced by the redshift of the resonant wavelength to be narrower and deeper, a reflection-type configuration is further introduced. By tuning the distance between the graphene and reflective layers, the figure of merit (FOM) of the device can be significantly improved and reaches a maximum value of 37.69 RIU-1, which is 2.6 times that of the former transmission-type configuration. Furthermore, the optimized sensor exhibits superior angle-insensitive property. Such a conformal graphene-decorated nanofluidic sensor offers a novel approach for graphene-based on-chip fluidic biosensing.
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