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. Author manuscript; available in PMC: 2012 Sep 1.
Published in final edited form as: J Phys Chem C Nanomater Interfaces. 2011 Sep 1;115(34):16879–16891. doi: 10.1021/jp205108s

Figure 11.

Figure 11

(a) FDTD calculations showing the near-field intensity of the dipole in water radiating at λ = 308 nm and oriented along the x-axis; (b) The intensity image of the near-fields created around a dimer system consisting of a d = 40 nm Ag nanoparticle and a d = 40 nm Alloy (Aly) nanoparticle spaced 2s = 20 nm apart with the dipole radiating at λ = 308 nm placed at the middle of the dimer axis (located s = 10 nm from the surface of each particle); (c) Near-field enhancement in the Ag-Alloy dimer system generated by dividing the raw data of panel (b) by that of panel (a); (d) Intensity image of the near-fields created around a dimer system consisting of two d = 40 nm Alloy nanoparticles spaced 2s = 20 nm apart with the dipole radiating at λ = 308 nm placed at the middle of the dimer axis; (e) Near-field enhancement in the Alloy-Alloy dimer system generated by dividing the raw data of panel (d) by that of panel (a). All images are presented in the log scale (base 10) for clarity.