With polymer molding techniques, it is possible to fabricate nanostructures
with a replication fidelity of 25 nanometers . Both hot embossing and inje
ction molding can be used, and cycle times of down to 4 sec can be achieved
in a CD injection molding process. The resolution is far below the structu
re size found today in compact disc memory media. The master structures are
produced by electron beam lithography and subsequent dry etching.