Yarns are produced by grouping and twisting single fibers together to form a continuous strands. Nanofibre yarns are expected to uncover new opportunities for development of well-defined three-dimensional nano fibrous architectures with new or enhanced functions and better mechanical performances. Beside describing the recent research developments of nanofibre yarns, this book also covers the "Direct Electrospinning of Twisted Nanofibre Yarn Technique" in detail. The preparation, production, applications, characterization and comparison of nanofibre yarn and wet spinning monofilament and their woven fabrics are also discussed in the book.