Computational calculations of local field and SERS enhancement factors using Mie theory

J. E. Gómez; F. R. Pérez

doi:10.7149/OPA.55.1.51082

Computational calculations of local field and SERS enhancement factors using Mie theory

Título traducido de la contribución: Estudio computacional de factores de intensificación de campo local y SERS mediante la teoría de Mie

J. E. Gómez, F. R. Pérez

Producción científica: Contribución a una revista › Artículo en revista científica indexada › revisión exhaustiva

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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.

Título traducido de la contribución	Estudio computacional de factores de intensificación de campo local y SERS mediante la teoría de Mie
Idioma original	Inglés
Número de artículo	51082
Publicación	Optica Pura y Aplicada
Volumen	55
N.º	1
DOI	https://doi.org/10.7149/OPA.55.1.51082
Estado	Publicada - 2022

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title = "Computational calculations of local field and SERS enhancement factors using Mie theory",

abstract = "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.",

keywords = "Computational calculation, Enhancement, Local field, Mie{\textquoteright}s theory, Sers",

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T1 - Computational calculations of local field and SERS enhancement factors using Mie theory

AU - Gómez, J. E.

AU - Pérez, F. R.

N1 - Publisher Copyright: © Sociedad Española de Óptica

PY - 2022

Y1 - 2022

N2 - 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.

AB - 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.

KW - Computational calculation

KW - Enhancement

KW - Local field

KW - Mie’s theory

KW - Sers

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DO - 10.7149/OPA.55.1.51082

M3 - Artículo en revista científica indexada

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SN - 0030-3917

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JO - Optica Pura y Aplicada

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Computational calculations of local field and SERS enhancement factors using Mie theory

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