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Schematic representation of the 3D origami device and assay procedure. Wax pattern of paper sheet (sheet-A) and (A) Single 3D origami device without the screen-printed electrodes. (B,C) Then electrodes were screen-printed on sheet-A and cut into individual 3D origami device. (D) After modification, the device was used to detect PSA exploiting an enzymatic reaction (E). Reproduced with permission from [76].
