| 초록 |
Block copolymer (BCP) thin films have been investigated for several nanotechnologyapplications, such as nanolithography and as nanotemplates, nanoporous membranes and sensors. Solvent vapor annealing (SVA) has emerged as a powerful technique for developing ordered microstructure of BCP thin films including healing defects, controlling the orientation of the microdomains and even changing the morphology sometime. We have studied the SVA process of polystyrene-block-polyisoprene(PS-b-PI) thin films using in-situ grazing-incidence x-ray scattering and transmission electron microscopy (TEM). We found that the orientation of perpendicular cylindrical microdomains in thePS-b-PI thin films changes drastically depending on the swelling ratio of the SVA process. In this poster presentation, we will give important insight into the pathways and mechanisms of reorientation of block copolymer thin films during the solvent vapor annealing |
