Plasmonic Enhanced SERS in Ag/TiO2 Nanostructured Film: An Experimental and Theoretical Study

被引：4

作者：

Awada, Chawki ^{[1
]}

机构：

[1] King Faisal Univ, Coll Sci, Dept Phys, POB 400, Al Hasa 31982, Saudi Arabia

来源：

MICROMACHINES | 2022年 / 13卷 / 10期

关键词：

plasmonics; SERS; Ag/TiO2; MB; finite element simulation; EM enhancement; RAMAN-SCATTERING; CHARGE-TRANSFER;

D O I：

10.3390/mi13101595

中图分类号：

O65 [分析化学];

学科分类号：

070302 ; 081704 ;

摘要：

In this work, we present a new study on the electromagnetic (EM) enhancement properties generated by Ag/TiO2 toward the finger print of methylene blue (MB) molecules deposited on the surface of Ag nanostructures. SERS intensity generated by MB molecules reflects the interaction between the local electric field and their bonds. A power-dependent SERS study in order to reveal the magnitude effect of a local electric field on the vibration behavior of molecular bonds of MB was performed. A theoretical study using finite element (COMSOL Multiphysics) was performed in order to understand the effect of interparticle distance of Ag nanoparticles on the enhancement properties.

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页数：10

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