CogniGron Seminar: Paolo Milani (University of Milano, Italy) - "Fabrication of logic devices based on Au cluster-assembled films for neuromorphic applications"

ABSTRACT :
Networks based on nanoscale resistive switching junctions are considered promising for the fabrication of neuromorphic computing architectures. Here I report that metallic nanostructured Au films fabricated by bare gold nanoparticles produced in the gas phase and with thickness well beyond the electrical percolation threshold, show a non-ohmic electrical behavior and complex and reproducible resistive switching [1,2].

We analyzed and compared the electrical activity of cluster-assembled Au nanostructured films with the spontaneous electrical activity of neuron networks, showing that despite their differences in origin and function, the electrical activity of both networks has similar statistical properties. The presence of recurrent features in the switching behavior such as a threshold voltage for the appearance of the switching activity, recurrently and discrete explored resistance values offers the possibility to exploit such class of systems for the fabrication of logic devices and complex networks suitable for reservoir computing.

References:
1.         M Mirigliano, F Borghi, A Podestà, A Antidormi, L Colombo, P Milani, Nanoscale Advances 1, 3119 (2019)
2.         C Minnai, A Bellacicca, SA Brown, P Milani, Scientific Reports 7 (1), 7955 (2017)