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Fig. 7 | Nano Convergence

Fig. 7

From: Nanostructured plasmonic substrates for use as SERS sensors

Fig. 7

ag Reproduced with permission from Ref. [50], © 2012, American Chemical Society. hk Reproduced with permission from Ref. [51], © 2010, American Chemical Society

Electron beam lithography SEM images of a a gold dimer, b, c a dimer/heptadecagon array, and d, e a dimer/heptadecagon/tetracontagon array. f Calculated electric field intensity distributions at the isolated dimer, dimer/enneadecagon, and dimer/enneadecagon/tetracontagon. Comparison of the electric field intensity obtained from different numbers of necklaces. g Comparison of the SERS spectra obtained from an isolated dimer, a dimer/enneadecagon, and a dimer/enneadecagon/tetracontagon. h Schematic diagram of gold nanodisk arrays prepared on a silica-coated gold film to form double resonance systems. i SEM image of gold nanodisk arrays prepared on a silica film-coated gold film. j Extinction spectra obtained from three different gold nanodisk arrays with different diameters and periods. k SERS spectra of benzenethiol obtained from three different geometries.

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