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Self-patterning of graphene-encapsulated gold nanoparticles for surface-enhanced Raman spectroscopy

  • Yuan Li (a1), Kelly Burnham (a2), John Dykes (a3) and Nitin Chopra (a4)

Abstract

The main challenges of developing advanced surface-enhanced Raman spectroscopy (SERS) sensors lie in the poor reproducibility, low uniformity, and the lack of molecular selectivity. In this paper, we report a facile and cost-effective approach for the large-scale patterning of graphene-encapsulated Au nanoparticles on Si substrate as efficient SERS sensors with highly-improved uniformity, reproducibility, and unique selectivity. The materials production was accomplished via an industry-applicable galvanic deposition—annealing—chemical vapor deposition approach, followed by a final plasma treatment. Our study provides a facile approach to the fabrication of uniform SERS substrate and further prompts the practical progress of SERS-based chemical sensors.

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Corresponding author

Address all correspondence to Dr. Nitin Chopra at nchop2@gmail.com

References

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