ISSN 0021-3454 (print version)
ISSN 2500-0381 (online version)
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12
Issue
vol 60 / DECEMBER, 2017
Article

DOI 10.17586/0021-3454-2017-60-4-375-380

UDC 681.33

SURFACE PLASMON-RESONANCE SENSOR FOR EXPRESS ANALYSES

R. V. Dukin
LOMO JSC; Engineer-Technologist


G. D. Shandybina
Saint Petersburg National Research University of Information Technologies, Mechanics and Optics; Associate professor


E. V. Kuzmin
ITMO University, Department of Laser Technologies and Systems; Post-Graduate Student


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Abstract. Surface plasmon resonance sensors are considered in Kretzmann configuration with different types of wave beams: parallel, diverging, and converging. Statistical measurements of the angle of total internal reflection of prism carried out in parallel wave beam with stepwise variation of the incidence angle, demonstrate high measurement accuracy of the method. Conversion from a discrete method to the measures of the entire diverging beam aperture allows to cover large range of angles, including the angles of total internal reflection and surface plasmon resonance, with a single measure. Therefore, the productivity of measurement process significantly increases without loss of accuracy. Changing the shape of the resonance curve in the transition from discrete to the aperture method is correlated with changes in the conditions of surface plasmons excitation. The large width of the resonance curve leads to a decrease in sensitivity of the method, and at the same time reduces significantly the time of measurements.
Keywords: surface plasmon resonance, laser irradiation, biochemical sensor devices

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