Dr. van Oss describes the nature of the various manifestations of hydrophobic interactions as well as of hydration pressure and analyzes the measurement of the contact angles that result when liquid droplets are deposited on flat solids. He also covers coacervation and complex coacervation, discusses the determination methods of electrokinetic potentials, and treats some of the lesser-known properties of water, such as cluster formation and the hydrophobicity of the water-air interface. Principally involved in multiple applications of colloids and interface science for more than 50 years, is Editor Emeritus of and Founding Editor of and of He is an editorial advisor for the . In addition to these Taylor & Francis journals, Dr. van Oss is the author, coauthor, or editor of eleven books, including (2002), and over 350 scientific papers and chapters.