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Figure 9. Regulating adhesion at the film/stamp interface based on the conformal additive stamp method for damage-free transfer printing of ultrathin films. (A) Schematic illustration showing the transfer printing process using the balloon stamp; (B) Optical images of the serpentine metal films on various 3D curvilinear substrates, including convex edge, concave edge, pyramid, and uneven surfaces. Reproduced with permission[70]. Copyright 2019, Springer Nature. 3D: Three-dimensional.
