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. 2015 Nov 5;5:16069. doi: 10.1038/srep16069

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(a) Extinction spectra of the Au-Ag dimers (l = 240 nm, d = 60 nm) with g = 10 nm (blue), 20 nm (red) and 50 nm (black) under LCP and RCP excitation. The inset shows the Fano fittings (green lines, ) of the indicated peaks for different gaps excited with RCP. The q values reflect the asymmetry of the peaks. (b) The CD spectra of the Au-Ag heterodimers with different gaps.

Inline graphic — (a) Extinction spectra of the Au-Ag dimers (l = 240 nm, d = 60 nm) with g = 10 nm (blue), 20 nm (red) and 50 nm (black) under LCP and RCP excitation. The inset shows the Fano fittings (green lines, ) of the indicated peaks for different gaps excited with RCP. The q values reflect the asymmetry of the peaks. (b) The CD spectra of the Au-Ag heterodimers with different gaps.