Simulation of Raman enhancement in SERS-Active substrates with Au layer considering different geometry of nanoparticles

Hui Wen Cheng*, Yiming Li

*Corresponding author for this work

Research output: Chapter in Book/Report/Conference proceedingConference contribution

2 Scopus citations

Abstract

In this work, we study surface enhanced Raman spectroscopy (SERS) active substrates for the detection of Rhodamine 6G. To examine the electromagnetic enhancement, with different shape of nanoparticle, we apply the finite-difference timedomain (FDTD) algorithm to analyze the structures by solving a set of coupled Maxwell's equations in differential form. The field enhancements are investigated in the visible regime with the wavelength of 633 nm. In the experimental measurement, the surface enhanced Raman scattering signals from the surface of substrates with 12-hour hydrothermal treatment and without treatment are performed and compared. Through the three-dimensional (3D) FDTD calculation, the enhancements with different shape of nanoparticle are tested and obtained which are nanoparticle, gold nanocage and gold/silver alloy for spherical, cubic and pyramidical shapes. The results show that the enhancement of spherical and cubic shapes can be much improved by nanocage and gold/siliver alloy structures.

Original languageEnglish
Title of host publication2010 14th International Workshop on Computational Electronics, IWCE 2010
Pages263-266
Number of pages4
DOIs
StatePublished - 2010
Event2010 14th International Workshop on Computational Electronics, IWCE 2010 - Pisa, Italy
Duration: 26 Oct 201029 Oct 2010

Publication series

Name2010 14th International Workshop on Computational Electronics, IWCE 2010

Conference

Conference2010 14th International Workshop on Computational Electronics, IWCE 2010
CountryItaly
CityPisa
Period26/10/1029/10/10

Keywords

  • Electromagnetic enhancement
  • Finite-difference time-domain
  • Gold nanocage
  • Gold/silver alloy
  • Hydrothermally treated substrate
  • Nanoparticle
  • Surface-enhanced raman spectroscopy (SERS)

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    Cheng, H. W., & Li, Y. (2010). Simulation of Raman enhancement in SERS-Active substrates with Au layer considering different geometry of nanoparticles. In 2010 14th International Workshop on Computational Electronics, IWCE 2010 (pp. 263-266). [5677966] (2010 14th International Workshop on Computational Electronics, IWCE 2010). https://doi.org/10.1109/IWCE.2010.5677966