In technology, soft lithography refers to a family of techniques for fabricating or replicating structures using "elastomeric stamps, molds, and conformable photomasks".
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PDMS stamps are pieces of polydimethylsiloxane (PDMS), a silicone, that have been patterned usually against a master to form a relief pattern used in soft lithography.
The device was created using a microfabrication strategy known as soft lithography that was pioneered by George M. Whitesides, an American chemist, who is a professor of chemistry at Harvard, as well as a Wyss Institute core faculty member.