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Emulating the paired-pulse facilitation of a biological synapse with a NiOx-based memristor
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10.1063/1.4804374
/content/aip/journal/apl/102/18/10.1063/1.4804374
http://aip.metastore.ingenta.com/content/aip/journal/apl/102/18/10.1063/1.4804374
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Figures

Image of FIG. 1.
FIG. 1.

(a) Schematic illustration of the PPF behavior of a biological synapse between a pre-synaptic neuron and a post-synaptic neuron. The synaptic strength is modified by the concentrations of the ionic species (e.g., Na, Ca, Mg). With a pair of stimuli, the post-synaptic current (or post-synaptic potential) induced by the second pulse is larger than that by the first pulse. (b) The PPF phenomenon of a NiO-based memristor observed in the present study. A pair of voltage pulses were applied to the memristor (the left panel), and the corresponding current of the memristor was measured (the right panel).

Image of FIG. 2.
FIG. 2.

PPF of the memristor as a function of the pulse interval with the pulse magnitude and width fixed at 1.8 V and 5 ms, respectively. The PPF measurement was conducted on 10 virgin devices for each pulse interval. The inset illustrates the pattern of a pair of voltage pulses with a pulse interval between the two pulses applied to the memristor. The fitting with Eq. (2) to the measured PPF values yields  = 30%,  = 72%,  = 53 ms, and  = 1111 ms.

Image of FIG. 3.
FIG. 3.

PPF as a function of the pulse magnitude (a) and pulse width (b). A PPF measurement was conducted on 10 virgin devices, and the statistical distribution of the PPF value is shown in the figure. In (a), the pulse width and pulse interval were 5 ms and 100 ms, respectively; and in (b),the pulse magnitude and pulse interval were 2 V and 100 ms, respectively.

Image of FIG. 4.
FIG. 4.

Influence of the pulse magnitude and pulse width on the parameters , , , and The values of the parameters were obtained from the fitting with Eq. (2) to the measured PPF values. A PPF measurement was conducted on 10 virgin devices.

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/content/aip/journal/apl/102/18/10.1063/1.4804374
2013-05-09
2014-04-21
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752b84549af89a08dbdd7fdb8b9568b5 journal.articlezxybnytfddd
Scitation: Emulating the paired-pulse facilitation of a biological synapse with a NiOx-based memristor
http://aip.metastore.ingenta.com/content/aip/journal/apl/102/18/10.1063/1.4804374
10.1063/1.4804374
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