Despite its advantages, UV NIL faces several challenges:
Alignment: Achieving precise alignment between the mold and the substrate can be difficult, especially for multilayer structures. Defects: The presence of defects in the mold or during the imprinting process can affect the quality of the final patterns. Material Limitations: Finding suitable UV-curable resists with the desired properties can be challenging. Durability: The mold may wear out over multiple uses, requiring frequent replacements.
