Aqueous foams are studied both as materials with many applications, and as model systems for fields ranging from metallurgy to mathematics to biology. They are complex fluids with unique and unusual properties, exemplified as much by their multiscale structure as by the dynamical processes through which they evolve and even their dual liquid-like and solid-like behaviour. In this book, readers can easily find clear, up-to-date answers to their questions regarding the physical and physico-chemical properties of aqueous foams, explained using current knowledge of their structure, their stability, and their rheology. Newcomers to the field will find descriptions of numerous applications of foams in daily life and in industrial processes, the definition of basic concepts, hundreds of figures, and simple experiments to perform at home. Those who want to proceed further will find updated references, exercises with solutions, appendices with experimental and numerical techniques, and boxed text with the further mathematical detail.
Herz Ass: Flüssigkeitströpfchen lassen sich entlang Trajektorien mit beliebiger Form bewegen (wie das abgebildete Herz), indem man durch Bestrahlen mit Licht einen wellenlängenabhängigen Gradienten der Grenzflächenspannung an einer Flüssig‐flüssig‐Grenzfläche erzeugt. Bei diesem neuartigen Phänomen („Farbkapillareffekt“) führt ein Fluss durch die Grenzfläche zu einer Tröpfchenbewegung in Gegenrichtung zum Gradienten.
Ultrastabile Schäume mit optimaler Schäumbarkeit sind mithilfe von Hydroxyfettsäure‐Röhren zugänglich (siehe Bild). Die Stabilisierung ist die Folge der Adsorption von Monomeren an der Luft‐Wasser‐Grenzfläche und dem Vorliegen von Röhren in den Plateau‐Grenzen. Beim Erwärmen gehen die Röhren in Micellen über, was zur Schaumdestabilisierung und damit zu den ersten Schäumen mit temperaturgesteuerter Schäumbarkeit führt.
scite is a Brooklyn-based organization that helps researchers better discover and understand research articles through Smart Citations–citations that display the context of the citation and describe whether the article provides supporting or contrasting evidence. scite is used by students and researchers from around the world and is funded in part by the National Science Foundation and the National Institute on Drug Abuse of the National Institutes of Health.