With 100% replication achievable down to nano level the precision and quality of the stamper becomes crucial. Stampers are mainly made in electroformed nickel or stainless steel depending on the type of pattern which is requested. A simple dot pattern can be made with laser or etching. Advanced micro lens arrays need a more complex manufacturing method including a lithography process (2D or 3D) to make a master for the production of the stamper in electroformed nickel.
To achieve the best result, the stamper should have a thickness between 0,6 mm to 1,0 mm with a good thickness uniformity. Maximum patterning area (quality area) is 370×235 mm. Stampers can normally be used for several hundred thousand cycles with adequate maintenance. A master for the electroforming process can be used to produce several identical stampers. For more information and discussion about what’s the best solution for your project, contact TC TECH direct.