This volume surveys recent progress in superconductivity, focusing on emerging materials, the mechanisms that enable high critical currents, and the design of practical devices. Drawing on contributions from researchers worldwide, the text examines the synthesis and characterization of novel superconductors, explores the physics governing their performance, and discusses engineering challenges in scaling these materials for real‑world applications such as magnets, power cables, and electronic components. Readers will find detailed analyses of material properties, experimental techniques, and device architectures, making the work a valuable reference for physicists, materials scientists, and engineers interested in the frontiers of superconducting technology.