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Fig. 3 | Microbial Cell Factories

Fig. 3

From: Green pyomelanin-mediated synthesis of gold nanoparticles: modelling and design, physico-chemical and biological characteristics

Fig. 3

a HAADF STEM image of AuNPs shows the spherical or polygonal nanoparticles. b The chemical composition analysis of AuNPs. EDS mapping of the Au (green) localized the gold nanoparticles. c Representative HRTEM image of AuNPs. Gold was identified by the inter-planes spacing d = 0.235 nm corresponding to the (111) plane of gold. Measurement of inter-planes spacing was done on FFT image (c, inset)

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