Prof. Heinz Hoffmann
Spontaneous self-assembly of simple surfactant molecules in water leads to a multitude of micellear structures such as globules, rods, disks, and vesicles. This macroscopic ordering leads to remarkable macroscopic properties, for example, a yield stress, complex fluid behavior, or iridescence under illumination. The various phases of surfactants are explored and the phenomenon of iridescence examined more closely. The network character of surfactant soultions is considered, the behavior of namatic and cholesteric phases in magnetic fields is described, and, finally, some shear-induced phenomena are sketched.