Ag/Ta2O5/CuO/Pt memristive devices with Ag point contacts at the interface exhibit forming-free and partial volatile analog resistive switching properties. Versatile synaptic functions. like the short-term plasticity. the long-term potentiation and the paired-pulse facilitation. https://www.bekindtopets.com/limited-time-Gorra-Raul-Tan-special-save/