Covering all aspects of soft functional materials, from fundamentals to engineering and applications, this comprehensive text outlines a step-by-step approach to refining the function and performance of small-molecule physical gels by tuning the network structure of the materials. Combining materials formation, engineering principles and approaches, and product design, it addresses a broad range of applications, including drug delivery, home and personal care, catalysis, and tissue engineering. A full-color insert illustrates key ideas and facilitates a complete understanding of the concepts.