Fig. 3 | Nature Communications

Fig. 3

From: Quantifying the triboelectric series

Fig. 3

Typical measured signals. a A typical output of open-circuit voltage in two cycles of contact and separation. b Short-circuit transferred charge between the two electrodes in two cycles. c The measured charge transferred for three samples for the same material of PTFE. d Stability of the measured value over a relatively long time-period for many cycles

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