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- W2897214925 abstract "This work reviews different types of surface structures formed on selectively etched GaN substrates for surface-enhanced Raman scattering (SERS) measurements. A one-to-one correlation between nano-structure and SERS efficiency, represented by the enhancement factor (EF), is shown by comparing SEM images with maps of Raman intensity. In this way, the location of hot-spots (H-Ss) is disclosed, leading to the selection of an optimal technology for manufacturing efficient and uniform SERS platforms. GaN platforms with nano-structures containing bunched pillars and pyramids covered with an Au-Ag plasmonic layer reproducibly show an EF of up to 106 for 4-mercaptobenzoic acid (pMBA) test molecules. Platforms with pits (inverted pyramids) yield an EF of one order of magnitude lower." @default.
- W2897214925 created "2018-10-26" @default.
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- W2897214925 date "2019-02-01" @default.
- W2897214925 modified "2023-09-27" @default.
- W2897214925 title "Relationship between the nano-structure of GaN surfaces and SERS efficiency: Chasing hot-spots" @default.
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- W2897214925 doi "https://doi.org/10.1016/j.apsusc.2018.10.076" @default.
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