  Graphene holds great potential for superconductivity due to its pure
two-dimensional nature, the ability to tune its carrier density through
electrostatic gating, and its unique, relativistic-like electronic properties.
At present, we are still far from controlling and understanding graphene
superconductivity, mainly because the selective introduction of superconducting
properties to graphene is experimentally very challenging. Here, we have
developed a method that enables shaping at will graphene superconductivity
through a precise control of graphene-superconductor junctions. The method
combines the proximity effect with scanning tunnelling microscope (STM)
manipulation capabilities. We first grow Pb nano-islands that locally induce
superconductivity in graphene. Using a STM, Pb nano-islands can be selectively
displaced, over different types of graphene surfaces, with nanometre scale
precision, in any direction, over distances of hundreds of nanometres. This
opens an exciting playground where a large number of predefined
graphene-superconductor hybrid structures can be investigated with atomic scale
precision. To illustrate the potential, we perform a series of experiments,
rationalized by the quasi-classical theory of superconductivity, going from the
fundamental understanding of superconductor-graphene-superconductor
heterostructures to the construction of superconductor nanocorrals, further
used as "portable" experimental probes of local magnetic moments in graphene.
