To study polymer thin films in membrane applications, materials must be transferred from a polished, smooth substrate to porous substrates in a fashion that does not fold, wrinkle, tear, or plastically deform the film. This video describes a 3D pr
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We present a procedure for highly controlled and wrinkle-free transfer of block copolymer thin films onto porous support substrates using a 3D-printed drain chamber. The drain chamber design is of general relevance to all procedures involving transfer of macromolecular films onto porous substrates, which is normally done by hand in an irreproducible fashion.