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Fig. 3 | Nano Convergence

Fig. 3

From: Nanostructured plasmonic substrates for use as SERS sensors

Fig. 3

ac Reproduced with permission from Ref. [30], © 2014, The Royal Society of Chemistry. eg Reproduced with permission from Ref. [32], © 2011, Nature Publishing Group

Synthesis of metal nanoparticles. Scanning electron microscopy (SEM) images of a gold nanospheres, b nanotriangles and c nanostars. d SERS spectra of R6G molecules measured from three different nanoparticles. e HRTEM image of a nanobridged nanogap particle. f Comparison of the SERS signal intensity produced in the presence or absence of a nanogap inside of a nanoparticle. g Calculated electric field intensity distributions at the metallic inner nanogap.

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