This title presents the state-of-the-art in molecular engineering and new developments in the fields of materials science, membrane biophysics, interfaces, sensing, and intermolecular interactions including molecular recognition. Topics covered are: the organization (orientation and association) of molecules in ultrathin films (monolayers) at the air/water interface; long range order in these films and in assemblies of such films on solid substrates; the interactions with solutes in the aqueous phase (including tensides, enzymes and analytes); and the potential applications of ultrathin films as nanometric modules in devices. Contributions are from leading scientists in their fields The book presents the most recent developments in molecular engineering Aims to stimulate new developments in the field of materials science.