Estudio computacional de factores de intensificación de campo local y SERS mediante la teoría de Mie

J. E. Gómez, F. R. Pérez

    Resultado de la investigación: Contribución a una revistaArtículorevisión exhaustiva

    Resumen

    Surface-Enhanced Raman Spectroscopy (SERS) is based on the amplification of Raman signals. One of the enhancement mechanisms is explained by the plasmon resonance of metal nanostructures. This work consists of the computational calculation, using Mie theory, of the Local Field Enhancement Factor (LFIEF) and the SERS Enhancement Factor (SERS EF) for an electric dipole signal close to a single metallic nanosphere (NP). Different sizes of silver, gold and aluminum NP suspended in ethanol, N,N-dimethylformamide, and chloroform were analyzed. The results show that the intensification peak agrees with the excitation wavelength for the respective plasmon resonance of each metal. It is evident that the size of the NP influences the magnitude of the intensity obtained; in addition, it is observed that the medium in which they are suspended produces a shift of the intensification peaks. For aluminum NP, an intensification peak around 200 nm suggests its possible use as a base for SERS substrate using ultraviolet excitation

    Título traducido de la contribuciónComputational calculations of local field and SERS enhancement factors using Mie theory
    Idioma originalEspañol
    Número de artículo51082
    PublicaciónOptica Pura y Aplicada
    Volumen55
    N.º1
    DOI
    EstadoPublicada - 2022

    Nota bibliográfica

    Publisher Copyright:
    © Sociedad Española de Óptica

    Palabras clave

    • Computational calculation
    • Enhancement
    • Local field
    • Mie’s theory
    • Sers

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