Electromagnetic Modelling of Raman Enhancement from Nanoscale Structures as a Means to Predict the Efficacy of SERS Substrates | Zendy

Richard J. C. Brown | Zendy; Jian Wang | Zendy; Martin Milton | Zendy

Open Access

Electromagnetic Modelling of Raman Enhancement from Nanoscale Structures as a Means to Predict the Efficacy of SERS Substrates

Author(s) -

Richard J. C. Brown,

Jian Wang,

Martin Milton

Publication year - 2007

Publication title -

journal of nanomaterials

Language(s) - English

Resource type - Journals

SCImago Journal Rank - 0.463

H-Index - 66

eISSN - 1687-4129

pISSN - 1687-4110

DOI - 10.1155/2007/12086

Subject(s) - raman spectroscopy , materials science , nanometre , nanoscopic scale , nanotechnology , substrate (aquarium) , surface enhanced raman spectroscopy , nanoparticle , signal (programming language) , raman scattering , optics , composite material , computer science , oceanography , physics , geology , programming language

The requirement to optimise the balance between signal enhancement and reproducibility in surface enhanced Raman spectroscopy (SERS) is stimulating the development of novel substrates for enhancing Raman signals. This paper describes the application of finite element electromagnetic modelling to predict the Raman enhancement produced from a variety of SERS substrates with differently sized, spaced and shaped morphologies with nanometre dimensions. For the first time, a theoretical comparison between four major generic types of SERS substrate (including metal nanoparticles, structured surfaces, and sharp tips) has been performed and the results are presented and discussed. The results of the modelling are consistent with published experimental data from similar substrates

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