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dc.contributor.authorBoland, John
dc.contributor.authorDonegan, John
dc.date.accessioned2019-06-05T13:39:17Z
dc.date.available2019-06-05T13:39:17Z
dc.date.issued2016
dc.date.submitted2016en
dc.identifier.citationO'Kelly C.J, Fairfield J.A, McCloskey D, Manning H.G, Donegan J.F, Boland J.J, Associative Enhancement of Time Correlated Response to Heterogeneous Stimuli in a Neuromorphic Nanowire Device, Advanced Electronic Materials, 2, 6, 2016, 1500458 -en
dc.identifier.otherY
dc.identifier.urihttp://hdl.handle.net/2262/87255
dc.descriptionPUBLISHEDen
dc.description.abstractIn spite of the strong interest in brain‐like or neuromorphic computation, relatively few devices have emerged whose neuromorphic behavior is embedded in the hardware itself and not reliant on external programming of synaptic weights. Here, a neuromorphic device is described based on a TiO2 nanowire that exhibits an associative memory response to the time correlation between voltage and optical stimuli. Memristive characteristics are also observed with current–voltage sweeps showing hysteresis loops and continuum resistance levels. The nanowire device responds to heterogeneous voltage and optical pulse stimuli with spike‐like neuromorphic outputs. Moreover, uncorrelated pulses produce a weak response, consistent with the interaction of coincident pulses with adsorbed and bulk oxygen in the surface depletion region, leading to a nonlinear enhancement in conductance. The strength of this learned enhancement depends on both the time correlation and the number of pulse stimuli, consistent with spike timing dependent plasticity. The nanowire devices presented have neural synapse‐like properties that could serve as a building block for neuromorphic computation.en
dc.format.extent1500458en
dc.language.isoenen
dc.relation.ispartofseriesAdvanced Electronic Materials;
dc.relation.ispartofseries2;
dc.relation.ispartofseries6;
dc.rightsYen
dc.subjectMemoryen
dc.subjectLearningen
dc.subjectAssociative Memoryen
dc.subjectNeuromorphic hardwareen
dc.subjectPulse Stimulien
dc.subjectSynapseen
dc.titleAssociative Enhancement of Time Correlated Response to Heterogeneous Stimuli in a Neuromorphic Nanowire Deviceen
dc.typeJournal Articleen
dc.contributor.sponsorEuropean Research Councilen
dc.contributor.sponsorScience Foundation Irelanden
dc.type.supercollectionscholarly_publicationsen
dc.type.supercollectionrefereed_publicationsen
dc.identifier.peoplefinderurlhttp://people.tcd.ie/jboland
dc.identifier.peoplefinderurlhttp://people.tcd.ie/jdonegan
dc.identifier.rssinternalid142862
dc.identifier.doihttp://dx.doi.org/10.1002/aelm.201500458
dc.rights.ecaccessrightsopenAccess
dc.contributor.sponsorGrantNumber321160en
dc.contributor.sponsorGrantNumber12/RC/2278en
dc.identifier.rssurihttps://www.scopus.com/inward/record.uri?eid=2-s2.0-84975044095&doi=10.1002%2faelm.201500458&partnerID=40&md5=adee48ff50c188d6184a15b32279ba81


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