Performance of Newly-Fabricated Modular Surface Plasmon Resonance (mSPR) Sensor

Abstract:

Performance of modular surface plasmon resonance (mSPR) sensor based on refractive index is discussed in this paper. The sensor was built in house using a polychromatic light source, polarizer to produce a transverse magnetic wave, high refractive index waveguide, gold-coated disk, single channel cell and spectrometer for data analysis. A knob for adjusting the angle of the incident provides a means for ease of angle variation which simplifies the design of the instrument for portability purposes. In conventional SPR, the light source need to be delocalized for search of the resonance angle, making the instrument bulky in size and had to be laboratory-based. The efficiency of the newly designed SPR biosensor was tested using a various percentages of ethanol in deionized water. Observations on the shifts of the resonance wavelength with ethanol strength revealed that the SPR biosensor has a sensitivity of 64 nm/RIU and a resolution of ~10² RIU.

• Periodical: Materials Science Forum (Volume 857)
• Pages: 459-464
• DOI: https://doi.org/10.4028/www.scientific.net/MSF.857.459
• Online since: May 2016
• Authors: Wan Mohd Azwady Wan Ahamad*, Dzaraini Kamarun, Mohd Kamil Abd Rahman
• Keywords: Biosensor, Label-Free, SPR, Surface Plasmon Resonance

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