After the solvent annealing self-assembly of PS-b-P4VP and EtOH reconstruction, I found some unexpected large pores, what should I do?

after the spin coating of the PS-b-P4VP solution on Si wafers, they were put into a covered glass petri dish for Dioxane vapor solvent annealing for a period, and dried under ambient temperature...

03 April 2015 826 3 View