nicaise_blockcopoly_01

Figure 1: Schematic of the major steps of the method for the directed self-assembly using a removable template with an etchable-block brush. (Step 1) fabrication of the templates using EBL, a PMMA resist, (Step 2) functionalizing the templates with a PS brush, (Step 3) spin coating and annealing of the BCP, and (Step 4) removing the PS matrix and the PMMA template using oxygen RIE.