SURFACE PLASMON RESONANCE SENSOR OF SILVER FILM BASED ON KRETCHMANN CONFIGURATION
DOI:
https://doi.org/10.11113/jt.v76.5834Keywords:
Surface Plasmon resonance, refractive index, sensor, Fresnel equationAbstract
Performance of a surface plasmon resonance (SPR) sensor based on Kretchmann configuration for silver (Ag) film is evaluated via theoretical simulation. The film thickness and incident angle are varied to obtain the SPR wavelength in the range of 500-550 nm. Shift of SPR wavelength with refractive index of the dielectric defines the sensitivity whereas the resolution is obtained from the ratio of the instrumental resolution to the sensitivity. The SPR sensor shows increasing sensitivity for thicker film however the absorption magnitudes of such films are high and unfavourable for data acquisition. Film thickness of 45 nm and 50 nm which has good sensitivity and resolution with high absorbance magnitude of the SPR wavelength is the best thickness to be employed for sensing purpose.
References
Huang Y. et al. 2011. Research on Surface Plasmon Resonance Sensor Based on Wavelength Modulation By Using Theoretical Simulation. Third International Conference on Measuring Technology and Mechatronics Automation. 83-86.
Ho. H. P. and Wu S. Y. 2007. Simulation of a Novel High Sensitivity and Wide Dynamic Range Phase-Sensitive Surface Plasmon Resonance Sensor. Conference on electron Devices and Solid State Circuits, IEEE. 301-304.
Ng, S. P. et al. 2008. A White-light Interferometric Surface Plasmon Resonance Sensor with Wide Dynamic Range and Phase-sensitive Response. Conference on Electron Device and Solid State Circuits, IEEE, IEEE. 1-4.
Maier, S. A. 2007. Plasmonics, Fundamentals and Applications. Bath; Springer.
Marcuse, D. 1974. Theory of Dielectric Optical Waveguides. New York: Academic Press.
Yeh, P. 2005. Optical Waves in Layered Media. New Jersey; Wiley.
Sharma, N. K. 2012. Performances of Different Metals in Optical-fibre Based Surface Plasmon Resonance Sensor. Pramana. 78: 417-427
Balaa, K. et al. 2007. Experimental Realization and Numerical Simulation of Wavelength-Modulated Fibre Optic Sensor Based on Surface Plasmon Resonance. Sensors and Actuators B. 126: 198-203.
Downloads
Published
Issue
Section
License
Copyright of articles that appear in Jurnal Teknologi belongs exclusively to Penerbit Universiti Teknologi Malaysia (Penerbit UTM Press). This copyright covers the rights to reproduce the article, including reprints, electronic reproductions, or any other reproductions of similar nature.
