A non-fluorine mold release agent for Ni stamp in nanoimprint process

This study presents a novel material as an anti-adhesive layer between Ni mold stamps and polymethyl methacrylate (PMMA) substrate in nanoimprint process. A polybenzoxazine ((6,6'-bis(2,3-dihydro-3-methyl-4H-1,3-benzoxazinyl))) molecule self-assembled monolayer (PBO-SAM) considering as anti-adhesive coating agent demonstrates that non-fluorine-containing compounds can be improve the nanoimprint process in Ni/PMMA substrates. In this work, the nanostructure-based Ni stamps and the imprinted PMMA mold are performed by electron-beam lithograph (EBL) and our homemade nanoimprint equipment, respectively. To control the forming of fabricated nanopatterns, the simulation can be analyzed their effect of temperature distributions on the deformation of PBO-SAM/PMMA substrate during hot embossing lithography (HEL) process. Herein the diameter of pillar patterns is 200 nm with and 400 nm pitch on Ni stamp surface. Based on the hydrophobic PBO-SAM surface in this conforming condition, the results of Ni mold stamps infer over 90% improvement in controlling quality and quantity.