Fig. 5 Electrical stimulation of nerve cells powered by BD-TENG.

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Fig. 5 Electrical stimulation of nerve cells powered by BD-TENG. Electrical stimulation of nerve cells powered by BD-TENG. (A) Rectified electrical output of BD-TENG. (B) Schematic diagram of self-powered nerve cell stimulation system. (C) Photograph of the two complementary patterned electrodes. (D) Bright-field microscope image of the electrodes. (E) Cell alignment analysis where the cell angle is represented by −cos2θ. (F to H) Orientation and distribution of nerve cells cultured on the electrodes. (F) Nerve cells with EF stimulation. (G) Nerve cells without EF stimulation. TRITC, tetramethyl rhodamine isothiocyanate. (H) Enlarged view of nerve cells directed by EF (the direction of EF is marked by a yellow arrow; scale bar, 50 μm). Qiang Zheng et al. Sci Adv 2016;2:e1501478 Copyright © 2016, The Authors