These are TEM (Transmission Electron Microscope) micrographs of arrays of Au clusters on MoS2. These were prepared and imaged by Dr. Andres' Cluster Group in the Purdue Chemical Engineering Department. Shown are two types of arrays - unlinked and linked with aryl di-thiol linking molecules. Note the difference in spacing between the two types of arrays.
Unlinked clusters (Dodecanethiol Surfactant)
Linked clusters (Aryl di-thiol linker)
High quality array of Au nanoclusters were transferred to an amorphous carbon film supported on a copper grid from the water surface after the Au nanoclusters organize into a uniform monolayer film of a high-quality, hexagonal close-packed monolayer on the water surface.
TEM micrograph of such a monolayer array reveals a hexagonal close-packed array of Au nanoclusters. The relative orientation of this array is preserved over microns.
This TEM image was taken by Jia Liu in Dr. Andres' Cluster Group in the Purdue Chemical Engineering Department.
Also, see STM image of monolayer array of Au nanoclusters.