Comparison of polyurethane and epoxy resist master mold for nanoscale soft lithography
Epoxy resist & polyurethane can be used to replicate nanostructured silicon masters. Replicated line gratings (500nm width /1?m pitch) were obtained by nanoimprint. These materials do not require an anti-adhesive treatment for PDMS stamp unmolding. Low cost polyurethane is a good candidate for soft lithography industrial processes.
polyurethane epoxy resist soft lithography nanoimprint nanostructured silicon master mold duplication