Fig. 5: IDI-DA PVDF transducer based physical activity monitoring. | npj Flexible Electronics

Fig. 5: IDI-DA PVDF transducer based physical activity monitoring.

From: Ion dipole interaction and directional alignment enabled high piezoelectric property polyvinylidene fluoride for flexible electronics

Fig. 5

a The flexible IDI-DA PVDF based transducer attached to the human body in various positions (finger, arm, wrist, elbow, knee, palm and shoes) for activity monitoring. By differentiating the output signals, the device attached on (b) finger and (c) arm can identify the degree of their curvature. Output voltage signals of the device mounted (d) on the wrist, e on the elbow, f on the knee, g in the palm with clapping softly and loudly and h on the heel of the shoe-pad with walking and running.

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