Fig. 1: Synthesis and TEM characterization of Au-Co NPs. | Nature Communications

Fig. 1: Synthesis and TEM characterization of Au-Co NPs.

From: Accurate prediction of the optical properties of nanoalloys with both plasmonic and magnetic elements

Fig. 1

a Schematic depiction of the LAL synthetic protocol to obtain metastable Au-Co alloy NPs: ns laser pulses are focused on a bulk Au-Co target to generate a colloid of nanoalloys in ethanol. b HRTEM image of the Au-Co NPs. c Schematic depiction of the SBS protocol to isolate different size fractions from the pristine sample. In SBS, the PEG-coated Au-Co NPs in water are subjected to centrifugal fields with increasing centrifugal force to separate NPs with different average size. d, e TEM (d) and STEM-EDX (e) bidimensional images of the three Au-Co samples, showing a homogeneous distribution of the two elements in the NPs (Au in yellow, Co in blue).

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