Thin film characterization surface plasmon resonance

Y.D. Jin, Y. Shao, and S.J. Dong, Direct electrochemistry and surface plasmon resonance characterization of alternate layer-by-layer self-assembled DNA-myoglobin thin films on chemically modified gold surfaces. Langmuir 19, 4771—4777 (2003). 

Surface plasmon resonance spectroscopy (SPR) has become a widely accepted optical technique for the characterization of interfaces and thin films. The underlying physical principles have been worked out and are summarized in great detail in the literature. With the availability of commercial instruments applications of surface plasmon spectroscopies have been reported in many diverse fields of science and engineering. 

The physics of surface plasmons propagating along a metal/dielectric interface has been studied intensively, and their fundamental properties have been found to be in good agreement with theoretical concepts based upon the plasma formulation of Maxwell s theory of electromagnetism. The phenomenon has been utilized extensively by physical scientists in studies of the properties of surfaces and thin films. Current interest in the properties of thin surface coatings stems partly from increased applications to thin film devices and, in particular, to recent developments in biosensor devices. This article focuses on the characterization of the surface plasmon resonance phenomenon, with emphasis on the conditions of optical excitation of plasmon resonance and the theoretical analysis of different types of surface resonances. 

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