%0 conference lecture (invited) %@ %A Abetz, V. %D 2020 %J Pacifichem 2020 %T Block copolymer self-assembly in internal and external fields %U %X Also non-equilibrium structures can be easily obtained by trapping block copolymer solutions in a metastable state, which can happen by fast evaporation of a solvent and quenching the block copolymer solution with a non-solvent. Also force fields, like mechanical shear or electric fields can affect the self-assembly. These situations will be discussed on the example of the formation of membranes from tailor-made block copolymers.