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. 2019 Sep 5;20(18):4346. doi: 10.3390/ijms20184346

Figure 2.

Figure 2

(A) Schematic illustration of the fabrication of the SERS hot spot nanocontainer system through bridging Au nanoparticles using Cucurbit (CB) [n] macrocyclic compounds. Reproduced with permission from reference [59]. (B) Calculated internal and near-field distributions for nanomatryoshkas (NMs) with 1-nm hollow spherical gap (left), bridged spherical gap (middle), and bridged polygonal gap (right). Reproduced with permission from reference [60]. Copyright Royal Society Chemistry, 2011; Copyright American Chemical Society, 2016.