provides a comprehensive and easy to read text on hydrogels and their biomedical uses, covering both fundamental as well as applied aspects of hydrogels. Lots of recent development have been made in the field, including new applications of hydrogels, thus readers will find in this book to be a new and fresh overview of hydrogels and their applications. Hydrogels are three-dimensional network of cross-linked polymers or particles that contain a large amount of water. They have received tremendous attention for applications in biomedicines, what has led to significant progress in the design and engineering of the hydrogels to meet the needs for such applications.