Electroforming is an additive manufacturing process where metal is grown atom by atom onto a conductive-coated substrate. Winovus use electroforming technology to manufacture nanoscale patterned Nickel molds.
First, we prepare the substrate (master template) by sputtering a thin-film Nickel layer onto a structured photoresist wafer. The next step is to fabricate the Nickel mold through electroforming, where homogeneous micro and nanoscale Nickel layers are formed on the substrate. The patterned Nickel mold is subsequently used for nanoimprinting and nanoinjection molding. The Nickel mold’s pattern and structures are transferred to the imprinted substrate.
Electroforming’s scalability and reproducibility allow multiple nickel molds to be replicated efficiently for high-volume nanoimprinting.