  An array of superconducting proximity islands has been shown to be highly
tunable by electric and magnetic fields. Indeed, a small change in the electric
and magnetic field can tune the system from a vortex Mott insulator to a vortex
metal. This transition from localized to a non-localized state can occur as
soon as the density of the superconducting vortices matches the density of the
pinning sites in a non defective structure. The possibility of further
modulation of non-localized superconducting states via enhancement of the
superconducting order parameter or modulation of the Josephson plasma frequency
is discussed. Based on the non-bolometric effects associated with the
occurrence of non-equilibrium phenomena in this original superconducting
networks we discuss also the possible applications of this array for a
conceptually new type of radiation detector.
