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Journal articles
Density effect of gold nanodisks on the SERS intensity for a highly sensitive detection of chemical molecules
Abstract : Surface-enhanced Raman scattering (SERS) is a sensitive and widely used as spectroscopic technique for chemical and biological structure analysis. One of the keys to increase the sensitivity of SERS sensors is to use nanoparticles/nanostructures. Here, we report on the density effect of gold nanodisks on SERS intensity for a highly sensitive detection of chemical molecules. Various densities of gold nanodisks with a height of 30 nm on gold/glass substrate were fabricated by electron beam lithography in order to have a good uniformity and reproducibility. The evolution of the enhancement factor (EF) with nanodisk density was quantified and compared to numerical calculations. An EF as high as 2:6 Â 10 7 was measured for the nanodisk with a diameter of 110 nm and a periodicity of 150 nm which corresponds to the highest density (42.2 %).
Cited literature [26 references]
https://hal-iogs.archives-ouvertes.fr/hal-01230274
Contributor : Julien Moreau <>
Submitted on : Thursday, October 5, 2017 - 2:58:03 PM
Last modification on : Tuesday, October 6, 2020 - 12:44:02 PM
Long-term archiving on: : Monday, January 8, 2018 - 12:23:50 PM
Contributor : Julien Moreau <>
Submitted on : Thursday, October 5, 2017 - 2:58:03 PM
Last modification on : Tuesday, October 6, 2020 - 12:44:02 PM
Long-term archiving on: : Monday, January 8, 2018 - 12:23:50 PM
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