Abstract
In this work, gold nanodots (Au NDs) were arrayed on the thin graphene (GR) layer, prepared by chemical vapor deposition, by focused ion beam technique. Following, GR/Au NDs substrates was evaluated of Surface-Enhanced Raman Scattering (SERS) by using rhodamine 6G (R6G) as a molecular probe. As expected, GR/Au NDs significantly enhanced the SERS signals. The limit of detection for R6G was as low as 10−12 M and the Raman enhancement factor was as large as 108 times. GR/Au NDs SERS-active substrate showed a promising technique to enhance the trace detection and quantitative detection of organic contaminants.
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