To Ngai is an associate professor in Chemistry department at the Chinese University of Hong Kong (CUHK). In recent years, he has mainly focused on the study of synthetic strategies for hydrogel colloidal particles, as well as their physicochemical properties, such as their behavior as dispersions and their assembly at interfaces. In particular, he has been interested in using microgel particles to stabilize emulsions and has successfully demonstrated that the soft and porous microgels give rise to special dynamic properties of interfacial layers, packing structure and emulsion stability. As a result, he has published a number of papers on this topic and extended such microgel-stabilized emulsions for the fabrication of novel materials. Stefan A. F. Bon is an associate professor in the Department of Chemistry at the University of Warwick. He has studied chemical engineering at the Eindhoven University of Technology (TUe) in the Netherlands (cum laude, 1989-1993). He did his Ph.D. (1993-1998) in the polymer chemistry group of prof.dr.ir. Anton L. German at TUe, after which he worked as a post-doctoral research assistant in the group of prof. David M. Haddleton at the University of Warwick (1998-2000). He was appointed as Unilever Lecturer in Polymer Chemistry at the University of Warwick in January 2001. Current research focusses on the design of assembled supracolloidal structures and the synthesis of their colloidal and macromolecular building blocks through combination of polymer chemistry, colloid science, soft matter physics, and chemical engineering.