  Here we propose a possible way to produce superconductors with high critical
temperature Tc by confinement of a Fermi liquid in a superlattice of quantum
stripes (wells, wires or dots). The enhancement of Tc is obtained by tuning the
size L of the stripes (wells, wires or dots), and the wavelength of electrons
at the Fermi level {\lambda}F at the resonance condition L {\lambda}F. The 3D
superconducting phase is stabilized by the condition that the separation W
between the stripes (wells, wires or dots) should be of the order of the
coherence length {\xi}0. This quantum state is realized in Bi2Sr2Ca2Cu2O8+y
superconductor with Tc= 84K, where the resonance condition kFy~2{\pi}/L for the
component of the Fermi wavevector normal to the stripe direction holds. This
work gives the parameters for the design of new superconducting materials with
higher Tc made of metal heterostructures approaching the atomic limit.
