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Study of the dynamics of measuring plasmon resonance conditions at the water-film Ag-AgC-C interface.
J
M. Kononov1, V. Pustovoy 1, V. Svetikov 1Prokhorov General Physics Institute of the Russian Academy of Sciences, laser phisics, Moscow, Russian Federation
Modern technological operations in microelectronics, integrated photonics, and also in modern biomedical research require precision measurements of the geometric and dielectric parameters of molecules adsorbed onto the metal surface from aqueous solutions.
We used the technique of excitation of surface plasmon resonance (SPR, Fig.1) in our work to determine these parameters.
The interactions of water dipoles on the surface of a silver film doped with carbon atoms has been investigated in the work. The interaction of water with the metal surface was studied under conditions of continuous metal stay in the aquatic environment in the regime of periodic water change and in the regime of periodic water change with short-term contact of the metal surface with air. The change in the parameters of the SPR excitation had a character close to linear (Fig. 2, curve 1) in the regime of constant dwelling of metal in water. For the mode of periodic contact of metal with air, the dependence of the reflection minimum angle was complex (Fig. 2, curve 2). This dependence indicates the complex dynamics of the processes occurring on the metal surface in the mode of periodic metal contact with air. In particular, this may be due to the reorientation of water molecules and the dynamics of the destruction of the network of hydrogen bonds.
References
[1] Kononov M.A., Pustovoy V.I., Svetikov V.V., Timoshenkov A.S., Solovjev V.S. Plasmonic spectroscopy of the water solutions of the copper phthalocyanine adsorbed on silver surface //
In: Proceedings of the 2018 IEEE Conference of Russian Young Researchers in Electrical and Electronic Engineering, ElConRus 2018 2018. p. 1989-1991.
[2] Vinogradov S.V., Kononov M.A., Pustovoi V.I., Svetikov V.V. Plasmonic spectroscopy of the water solutions of the copper phthalocyanine adsorbed on a silver surface //Appl. Phys. 2017. Vol. 1. p. 69-73.
