This book is comprised of five Chapters. It underwrites literature review and background of nanomaterials (nanowires) indicates that materials with structure at the nanoscale often have unique optical, electronic, or mechanical properties and also gives statistics of their applications such as, to produce low cost flexible solar panels, describes their part in the development of biomedical sensors and biochips, hydrogen sensors, optoelectronics, reduce the cost of producing fuel cells, and to make dense computer memory, called "race track memory. We included the detailed experimental procedure for preparation of porous anodic alumina oxide (AAO) templates and Direct current (DC) electrodeposition technique, Mechanism for formation of fcc-cobalt nanowires in electrodeposition at ambient temperature, Influence of bath temperature and pH on structure of electrodeposited cobalt nanowires is presented briefly, and at the end we presented summary of conclusions for the experimental research work and recommendations for proposed future works.