This book presents current research topics related to the physics of low-dimensional systems such as magnetic nanoparticles-proteins conjugates and transition metal spin clusters (zero-dimensional systems), and both plain and hybrid micro/nano wires embedded in a normal-metal matrix (one-dimensional systems), and both plain and hybrid magnetic/superconducting thin films (two-dimensional systems). The unconventional magnetic and superconducting properties of these systems are experimentally accessed in relation to the preparation conditions and the subsequent chemical/thermal/mechanical treatment. The novel propositions that are discussed in this book could become cornerstones for interdisciplinary applications related to Nephrology and Hemodialysis, Quantum Computing, Electric Power Applications, Magnetic Recording, and Electronics.