In-materio reservoir working at low frequencies in a AgS-island network.

A AgS-island network is fabricated with surrounding electrodes to enable it to be used as a reservoir for unconventional computing. Local conductance change occurs due to the growth/shrinkage of Ag filaments from/into each AgS island in the reservoir. The growth/shrinkage of Ag filaments is caused by the drift of Ag cations in each AgS island, which results in a unique non-linear response as a reservoir, especially at lower frequencies.