Formation and dissolution of conductive channels in an Ag2S-islands network

A network that shows dynamical change in response to each input pattern works as a reservoir. In this study, we propose to use a network of Ag2S islands for reservoir computing. Input of a small number of electrons to an Ag2S island from a neighbored island causes Ag nanowire growth, which eventuall...

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Bibliographic Details
Published inJapanese Journal of Applied Physics Vol. 59; no. SN
Main Authors Ojima, Keita, Hasegawa, Tsuyoshi, Naitoh, Yasuhisa, Shima, Hisashi, Akinaga, Hiroyuki
Format Journal Article
LanguageEnglish
Published IOP Publishing 01.08.2020
Subjects
atomic switch
reservoir
silver sulfide
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Summary:A network that shows dynamical change in response to each input pattern works as a reservoir. In this study, we propose to use a network of Ag2S islands for reservoir computing. Input of a small number of electrons to an Ag2S island from a neighbored island causes Ag nanowire growth, which eventually connects the two islands. Shrinkage of an Ag nanowire also occurs depending on the distribution of a local electric potential. Thus, growth and shrinkage of Ag nanowires among Ag2S islands shows dynamical change in conductive channels responding to input bias, which is demonstrated by an Ag2S-island network surrounded by input/output electrodes. The Ag2S islands that are electrically connected to a surrounding electrode are identified using a conductive-atomic force microscope, confirming the operating mechanism.
Bibliography:JJAP-S1101782.R2
ISSN:0021-4922
1347-4065
DOI:10.35848/1347-4065/ab922d