Fig. 5: Performance metrics of the µBLAST devices. | Nature Communications

Fig. 5: Performance metrics of the µBLAST devices.

From: Metaplastic and energy-efficient biocompatible graphene artificial synaptic transistors for enhanced accuracy neuromorphic computing

Fig. 5

a Schematic of the 32 µBLASTs array, featuring metal feedlines (red), graphene channel (green), passivated with polyimide and covered with Nafion (blue). b µBLAST conductance cycling per alternating positive and negative trains of 20 write pulses (10 nA magnitude and 5 ms duration). Read power dissipation is also shown. c Average change in conductance of four nominally identical µBLAST devices showing an overlap in dynamic range and plasticity. d Heat maps of the cumulative distribution function for the four µBLAST devices, showing the unique metaplastic behavior for positive spikes. On each graph, the color code is normalized from 0 to 1, representing the probability that ΔG is greater than the expected value of ΔG.

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