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Plasmonic gold gratings for reproducible surface-enhanced Raman spectroscopy

Paper Authors:

Amro Sweedan,

Mariela J. Pavan,

Enno Schatz,

Henriette Maaß,

Ashageru Tsega,

Vered Tzin,

Katja Höflich,

Paul Mörk,

Thorsten Feichtner,

Muhammad Y. Bashouti

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Key Details

Double wire gold gratings are introduced as advanced SERS substrates

Gratings are fabricated from monocrystalline gold using focused ion beam lithography

Geometry is computationally optimized for maximal near-field enhancement

Gratings show high sensitivity, reproducibility, stability and can detect sub-monolayer analyte coverages

AI generated summary

Plasmonic gold gratings for reproducible surface-enhanced Raman spectroscopy

This study introduces double wire gold gratings for surface-enhanced Raman spectroscopy. The gratings are fabricated from monocrystalline gold using focused ion beam lithography. Evolutionary optimization tunes the geometry to maximize near-field enhancement at both the excitation and emission wavelengths. The gratings achieve enhancement factors around 106, notable reproducibility, and detect sub-monolayer analyte coverages. They also demonstrate reusability, shelf stability, and success detecting various analytes.

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