Engineering SERS-active substrates: design and characterization of advanced structures
Maria Alessandra Cutolo,
Francesco Galeotti,
Sara Spaziani
et al.
Abstract:We investigated the creation of SERS-active hierarchical substrates based on self-assembled nanospheres (HSNs). We demonstrate how the "hierarchical" approach could be systematically exploited to extend the SERS hotspots into the third dimension, by enhancing the hot-spots spatial density and intensity. The proposed hierarchical substrates take advantage of the single layer hexagonal closed packed array nanospheres (CPA). An additional layer of upper nanospheres to obtain dense and intense hot spots pattern is… Show more
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