Ultrahigh vacuum scanning tunneling microscope manipulation of single gold nanoislands on MoS2 for constructing planar nanointerconnects.

The manipulation of single metallic nanoislands with a precision better than 0.5 nm on a MoS₂ surface is demonstrated. Optimizing the metal growth conditions yields triangular-shaped nanoislands of 30 nm in lateral size and 12 nm in height on the MoS₂ surface. The manipulation of a single nanoisland was performed using the tip apex of a scanning tunneling microscope. The feedback loop conditions to achieve this manipulation are discussed. Fully planar four-pad nanostructures were constructed, and the apex of each triangular nanoisland of the nanostructure is pointing toward a central 10×20 nm² MoS₂ working area where the surface atomic cleanliness is preserved. [ABSTRACT FROM AUTHOR]