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. Author manuscript; available in PMC: 2012 Dec 20.
Published in final edited form as: J Phys Chem C Nanomater Interfaces. 2011 Dec 20;115(50):24437–24453. doi: 10.1021/jp207821t

Figure 2.

Figure 2

NCA building blocks: tuning the optical response of individual and coupled nanospheres. (A) Scattering efficiency, (B) E-field intensity enhancement and (C) absorption efficiency of a single Au NP as function of NP radius and wavelength under illumination by a plane wave. (D) Polarization-averaged scattering efficiency and (E) the near-field intensity enhancement (for the incident field polarized along the dimer axis) of an 80 nm Au nanosphere dimer as a function of the dimer gap width and wavelength. Spatial maps of the electric field intensity on the dimer with a 1 nm gap for the incident field polarization (F) along and (G) across the dimer axis.