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The PMC Cell

The PMC cell is an ion-conducting glass channel doped with silver ions that is sandwiched between a silver anode and an inert cathode (the +'s are silver ions, or alternatively, copper ions). When an electric field is applied between the electrodes, ions are released from the silver anode and make their way to the cathode where they combine with electrons to form a tiny silver wire that acts as a conductive bridge between the two sides. When the field is reversed, the wire comes apart. (Image courtesy of Axon Technologies Corporation, www.axontc.com)

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