| Autor: |
Kadhum, Farah Jawad, Alikan, Jasim Shamki, Mohammed, Sahar A., Dawood Al-Zuky, Ali Abid, Al Saleh, Anwar Hassn |
| Předmět: |
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| Zdroj: |
Journal of Theoretical & Applied Physics; 2024 Special Issue, Vol. 18, p1-10, 10p |
| Abstrakt: |
Surface plasmon resonance (SPR) is a very sensitive technique for keeping track of changes in the optical properties close to the sensor surface. In the Kretschmann configuration, it can be triggered by an evanescent field resulting from total internal reflection from the rear of the sensor surface. The layers were deposited on the semicircular glass prism LASF35 using toluene (C7H8) as a sensing medium. The simulation model was created at a sodium (Na) layer thickness of (dNa) (dNa = 50 nm) layers and at varying thicknesses of tantalum pentoxide (Ta2O5) (dTa2O5).The parameters of the surface plasmon resonance angle (SPR) were computed. SPR occurred strongly and well in the IR area at (800, 900) nm when it was not seen in the ultraviolet region (100 nm) and appeared in the visible region at 500, 600, and 700 nm. The visible region's highest sensitivity (S = 190) occurred at 700 nm, where the sodium layer thickness (dNa) values of SPR dip length (Ld) and full width half maximum (FWHM) were excellent (50 nm). As a result, the suggested sensor can operate at wavelengths of 500, 600, 700, 800, and 900 nm in the IR-visible range. [ABSTRACT FROM AUTHOR] |
| Databáze: |
Complementary Index |
| Externí odkaz: |
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