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English Caption: 

Researchers at HZB in co-operation with Humboldt-Universität zu Berlin (HU, Berlin) have made an astonishing observation: they were investigating the formation of gold nanoparticles in a solvent and observed that the nanoparticles had not distributed themselves uniformly, but instead were self-assembled into small clusters. This was determined using Small-Angle X-ray Scattering (SAXS) at BESSY II. A thorough examination with an electron microscope (TEM) confirmed the result.

This image shows a cryogenic TEM micrograph of gold nanoparticles (Au-NP) in DES-solvent. Sputtering duration 300 s. Red circles show the different domains of self-assembled Au-NPs. The inset shows an enlarged image of one particular domain of self-assembled Au-NPs. (Image: HU Berlin/HZB)

For more information, please see the press release "Self-assembly of Gold Nanoparticles into Small Clusters."

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