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SEM micrograph of a single nanowire obtained by dissolving the hosting polymer membrane. Inset: Top view of the track-etched polycarbonate membrane showing the regularity of diameters.
Time dependence of voltage across the nanowire, passed through the resistive divider, in response to a step pulse of current. The nonzero voltage at time is due to contact resistances. The true PSC signal is the positive step arising at . Its apparent rise time is the result of jitter on and averaging. (Real rise time—as observed in single shot displays—is much faster).
characteristic curve measured in the pulse mode, after application of the “current” pulse. Branches , and , are described in the text. Due to finite circuit resistance, the PSC formation is not strictly controlled on . The PSC state is present on the branch.
Temperature dependence of the critical (PSC) current and of the (hot spot) current .
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