Patent ID: 7041228

Claim:
A process in connection with nanoimprint lithography on a substrate with at least a first coating layer of a positive resist material disposed closest to a surface of the substrate, and a second coating layer of a negative resist material, the first coating layer being disposed between the substrate and the second coating layer, comprising the steps of: imprinting a pattern of nanometer size into the second coating layer by a template; exposing a portion of the first coating layer at an impression formed in the second coating layer; applying radiation simultaneously to the second coating layer and to only the exposed portion of the first coating layer; subjecting the substrate to an isotropic developing method selected so that the first coating layer is developed more quickly than the second coating layer, so that an undercut profile is obtained in the coating layers, and selected so that the exposed portion of the first coating layer which has been subjected to radiation is developed more quickly than parts of the first coating layer which have not been subjected to radiation.