Journal
PHYSICA SCRIPTA
Volume 94, Issue 5, Pages -Publisher
IOP PUBLISHING LTD
DOI: 10.1088/1402-4896/ab0a12
Keywords
nanostructures; surface plasmons; optoelectronics
Categories
Funding
- National Natural Science Foundation of China [91850112, 11534006, 51475347, 61735013, 11374166]
- Natural Science Foundation of Jiangsu Province, China [BK20161401]
- Fundamental Research Funds for the Central Universities [WUT: 2018IVA096, 021014380093]
Ask authors/readers for more resources
An aluminum ultrathin film with nanohole arrays arranged in a hexagonal lattice is theoretically explored for the sensor application. Two transmission dips, which exhibit high sensitivity to the refractive index (RI) of the cladding layer or substrate, are presented owing to the excitation of surface plasmons at the top and bottom surfaces of the ultrathin metal film. Numerical results show that a sensitivity of 348 nm/RIU, with a figure of merit of 34.8, are obtained, which are tolerated in the existence of aluminum oxidization. By increasing the RI of the substrate, the related transmission dip is obviously red-shifted, which makes the sensors based on the proposed nanostructure work effectively in a broad spectral range from ultraviolet to near-infrared.
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