Fig. 2: SAXS investigation of AuNP superlattices. | Nature Communications

Fig. 2: SAXS investigation of AuNP superlattices.

From: Structural order in plasmonic superlattices

Fig. 2

a Exemplary intensity map (AuNP25@PSSH2k) obtained by scanning SAXS with 10 µm step width where each pixel corresponds to one SAXS measurement. The structure of the copper grid can be discerned. b Exemplary I(q) of a single SAXS pattern and 2D scattering pattern (logarithmic intensity scale) for AuNP25@PSSH2k. Vertical black lines are expected peak positions for a 2D-hexagonal lattice. c Fit results for the lattice constant a (assuming a 2D-hexagonal lattice) averaged over all measurements (>700 for each sample) on an absolute a-scale. d Exemplary fit results (same color code as in c) on a normalized P(a) and a-scale (Δa = a−〈a〉) compared to results for an AuNP@Citrate-based superlattice (gray dashed line, d ~ 30 nm, functionalized with PSSH5k).

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