Abstract
The conventional surface plasmons resonance(SPR) detection and the improved SPR detection were investigated, which were both based on the attenuated total reflection(ATR) geometry. The conventional detection system on Kretschmann configuration, can detect the dielectric constant changes of the medium near a metal film’s surface by measuring the intensity changes of the reflected beam. The improved SPR detection in a prism-multilayer configuration, which formed the long-range surface plasmon polaritions(SPPs) mode, provided the substantial improvement of the sensitivity and contrast of the detection over the conventional method that is of great benefit to the applications in various fields.
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