Nano-optic label-free biosensors based on photonic crystal platform with negative refraction
| Autor: | W. Aroua, F. AbdelMalek, Shyqyri Haxha |
|---|---|
| Rok vydání: | 2012 |
| Předmět: |
Materials science
business.industry Finite-difference time-domain method Radius Atomic and Molecular Physics and Optics Electronic Optical and Magnetic Materials Optics Negative refraction Nanosensor Nano Sensitivity (control systems) Electrical and Electronic Engineering Physical and Theoretical Chemistry business Biosensor Photonic crystal |
| Zdroj: | Optics Communications. 285:1970-1975 |
| ISSN: | 0030-4018 |
| DOI: | 10.1016/j.optcom.2011.12.004 |
| Popis: | In this paper, a novel biosensor based on hetero photonic crystal (PC) structures is proposed. The biosensor consists of photonic crystals with negative refraction (PCNR) embedded between two ordinary PC structures. The PCNR is employed in order to produce an image that is as similar as the light source, which is located in the first ordinary PC. Significant enhancement of the image is achieved when a nanocavity is introduced into the PCNR. It is found that the transmission peak shifts when the nanocavity is filled with blood plasma, liquid and dry air. It is shown that by careful selection of the radius of the nanocavity, the sensitivity of the proposed biosensor can be enhanced. The presented PCNR biosensor is investigated by employing the finite-difference time-domain method (FDTD). |
| Databáze: | OpenAIRE |
| Externí odkaz: |
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