On/off switch: Template-assisted step-electrochemical growth is used to fabricate ionic–electronic conductors based on heteronanowire arrays. A two-electrode configuration with a Ag/Ag2S heteronanowire array shows a reversible electrical switching behavior (see picture) that is attributed to controllable creation and dissolution of a Ag conducting nanobridge inside Ag2S wire segments.
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Liang et al. (2005) studied this question.
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