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Abstract
In recent years, optical biosensors widely applicable for medical applications, have received much attention. In this paper, we propose a high-performance polarization-insensitive optical biosensor based on a graphene-dielectric metasurface. The metasurface consists of an asymmetric dielectric disk array that supports a high Q-factor Fano resonance. The provided sharp Fano resonance results in an enhanced light-matter interaction leading to a highly sensitive biosensor. The proposed structure is analyzed using the finite element method and the corresponding transmission and reflection spectra are calculated. According to the presented results, a sensitivity of as high as 550 nm/RIU, linearity R2 value of 0.999 with a figure of merit (FOM) more than 378 RIU-1 around the operating wavelength of 1550 nm are obtained. This is the largest FOM ever reported for a polarization-insensitive biosensor. Such a large FOM accompanied by high sensitivity and linearity make our proposed graphene-based biosensor promising for the effective detection of biomolecules like hemoglobin.
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Authors (6)
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Fatemeh Salemizadehparizi
-
Mahdi Molaei Zarasvand
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Saeed Abdolhosseini
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Shahram Bahadori-Haghighi
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Details
- Category:
- Articles
- Type:
- artykuły w czasopismach
- Published in:
-
IEEE SENSORS JOURNAL
no. 22,
pages 2037 - 2044,
ISSN: 1530-437X - Language:
- English
- Publication year:
- 2022
- Bibliographic description:
- Parizi M. S., Salemizadehparizi F., Zarasvand M. M., Abdolhosseini S., Bahadori-Haghighi S., Khalilian A.: High-performance graphene-based biosensor using a metasurface of asymmetric silicon disks// IEEE SENSORS JOURNAL -Vol. 22,iss. 3 (2022), s.2037-2044
- DOI:
- Digital Object Identifier (open in new tab) 10.1109/jsen.2021.3134205
- Verified by:
- Gdańsk University of Technology
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