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Figure 2. Soft electronics based on magnetic nanomembranes/nanostructures. (A) Schematic illustration of the structure and
mechanism of a simplified trilayer GMR sensor; (B) An imperceptible magnetic sensor foil consisted of GMR sensors. Top frame:
structure of the sensor. Middle frame: optical image of a sample (marked by the blue dashed rectangle) mounted to a stretching stage.
Bottom frames: scanning electron microscopy (SEM) images of the sample under 50% compressive strain. The red arrow indicates the
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direction of the applied magnetic field. Reproduced with permission from Ref. . Copyright 2015. Springer Nature; (C) An SCMN with
eight functions. Left frame: schematic illustration (temp.: temperature). Right frames: optical images of the SCMN attached to a sheet
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of paper, integrated on a human finger and human skin, and stretched manually. Reproduced with permission from Ref. . Copyright
2018. Springer Nature; (D) Schematic illustration of the structure and mechanism of an AMR sensor; (E) An e-skin compass. Left frame:
