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. 2021 May 3;13(18):21007–21017. doi: 10.1021/acsami.1c03288

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© 2021 The Authors. Published by American Chemical Society

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(a) Electrical conductivity of RS, RS/CNTs, and RS/f-CNTs films, respectively. (b) FESEM images of the surface morphologies of RS, RS/f-CNTs, and RS/CNTs films, respectively. (c) Schematic representation of the sensor layout and (d) Photograph of the fabricated piezoelectric device (scale bar indicates 1 cm). (e) Photograph illustrating the implanted sensor implanted sensor in a subcutaneous pocket of the rat abdomen. (f) Open-circuit voltage (V_OC) data recorded by RS, RS/CNTs, and RS/f-CNTs films, showing the signal generated by the breathing of the rat under anesthesia.