Amphiphilic lamellar model systems under dilation and compression: Molecular dynamics study

Using an effective simplified continuum model for diblock copolymers, surfactants, and liquid crystals, the response of lamellar systems upon dilation and compression along the layer normal is investigated by large-scale parallelized dissipative particle dynamics like stabilized molecular dynamics simulation. We demonstrate dilation induced long-lived undulations and give clear evidence for introduction or elimination of a layer by the creation and movement of dislocation under higher dilation or compression strain. (C) 2003 American Institute of Physics.