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Surface plasmons are optical waves that can be resonantly excited on metallic surfaces. In biosensors based on surface plasmon resonance (SPR), these optical waves probe the binding of target molecules contained in a liquid sample to their affinity partners anchored to a metallic sensor surface. The capture of target molecules on the surface increases the refractive index within the evanescent field...
The electropolymerization and doping/dedoping properties of polyaniline ultrathin films on Au electrode surfaces were investigated by a combination of in situ electrochemical techniques, i.e., electrochemical surface plasmon spectroscopy (ESPR) and the electrochemical quartz crystal microbalance (EQCM). In the ESPR measurements, we employed two wavelengths, i.e., 632.8 and 1152 nm in order to distinguish...
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